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key

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key


  10  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Key  \Key\  (k[=e]),  n.  [OE.  keye,  key,  kay,  AS  c[ae]g.] 
  1.  An  instrument  by  means  of  which  the  bolt  of  a  lock  is  shot 
  or  drawn;  usually,  a  removable  metal  instrument  fitted  to 
  the  mechanism  of  a  particular  lock  and  operated  by  turning 
  in  its  place 
 
  2.  An  instrument  which  is  turned  like  a  key  in  fastening  or 
  adjusting  any  mechanism;  as  a  watch  key;  a  bed  key,  etc 
 
  3.  That  part  of  an  instrument  or  machine  which  serves  as  the 
  means  of  operating  it  as  a  telegraph  key;  the  keys  of  a 
  pianoforte,  or  of  a  typewriter. 
 
  4.  A  position  or  condition  which  affords  entrance,  control, 
  pr  possession,  etc.;  as  the  key  of  a  line  of  defense;  the 
  key  of  a  country;  the  key  of  a  political  situation.  Hence 
  that  which  serves  to  unlock,  open  discover,  or  solve 
  something  unknown  or  difficult;  as  the  key  to  a  riddle; 
  the  key  to  a  problem. 
 
  Those  who  are  accustomed  to  reason  have  got  the  true 
  key  of  books.  --Locke. 
 
  Who  keeps  the  keys  of  all  the  creeds.  --Tennyson. 
 
  5.  That  part  of  a  mechanism  which  serves  to  lock  up  make 
  fast  or  adjust  to  position. 
 
  6.  (Arch.) 
  a  A  piece  of  wood  used  as  a  wedge. 
  b  The  last  board  of  a  floor  when  laid  down 
 
  7.  (Masonry) 
  a  A  keystone. 
  b  That  part  of  the  plastering  which  is  forced  through 
  between  the  laths  and  holds  the  rest  in  place 
 
  8.  (Mach.) 
  a  A  wedge  to  unite  two  or  more  pieces,  or  adjust  their 
  relative  position;  a  cotter;  a  forelock.  See  Illusts 
  of  {Cotter},  and  {Gib}. 
  b  A  bar,  pin  or  wedge,  to  secure  a  crank,  pulley, 
  coupling,  etc.,  upon  a  shaft,  and  prevent  relative 
  turning;  sometimes  holding  by  friction  alone,  but  more 
  frequently  by  its  resistance  to  shearing,  being 
  usually  embedded  partly  in  the  shaft  and  partly  in  the 
  crank,  pulley,  etc 
 
  9.  (Bot.)  An  indehiscent,  one-seeded  fruit  furnished  with  a 
  wing,  as  the  fruit  of  the  ash  and  maple;  a  samara;  -- 
  called  also  {key  fruit}. 
 
  10.  (Mus.) 
  a  A  family  of  tones  whose  regular  members  are  called 
  diatonic  tones,  and  named  key  tone  (or  tonic)  or  one 
  (or  eight),  mediant  or  three  dominant  or  five 
  subdominant  or  four  submediant  or  six  supertonic  or 
  two  and  subtonic  or  seven  Chromatic  tones  are 
  temporary  members  of  a  key,  under  such  names  as  `` 
  sharp  four,''  ``flat  seven,''  etc  Scales  and  tunes 
  of  every  variety  are  made  from  the  tones  of  a  key. 
  b  The  fundamental  tone  of  a  movement  to  which  its 
  modulations  are  referred,  and  with  which  it  generally 
  begins  and  ends  keynote. 
 
  Both  warbling  of  one  song,  both  in  one  key. 
  --Shak. 
 
  11.  Fig:  The  general  pitch  or  tone  of  a  sentence  or 
  utterance. 
 
  You  fall  at  once  into  a  lower  key.  --Cowper. 
 
  {Key  bed}.  Same  as  {Key  seat}. 
 
  {Key  bolt},  a  bolt  which  has  a  mortise  near  the  end  and  is 
  secured  by  a  cotter  or  wedge  instead  of  a  nut. 
 
  {Key  bugle}.  See  {Kent  bugle}. 
 
  {Key  of  a  position}  or  {country.}  (Mil.)  See  {Key},  4. 
 
  {Key  seat}  (Mach.),  a  bed  or  groove  to  receive  a  key  which 
  prevents  one  part  from  turning  on  the  other 
 
  {Key  way},  a  channel  for  a  key,  in  the  hole  of  a  piece  which 
  is  keyed  to  a  shaft;  an  internal  key  seat;  --  called  also 
  {key  seat}. 
 
  {Key  wrench}  (Mach.),  an  adjustable  wrench  in  which  the 
  movable  jaw  is  made  fast  by  a  key. 
 
  {Power  of  the  keys}  (Eccl.),  the  authority  claimed  by  the 
  ministry  in  some  Christian  churches  to  administer  the 
  discipline  of  the  church,  and  to  grant  or  withhold  its 
  privileges;  --  so  called  from  the  declaration  of  Christ, 
  ``I  will  give  unto  thee  the  keys  of  the  kingdom  of 
  heaven.''  --Matt.  xvi.  19. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Key  \Key\,  v.  t.  [imp.  &  p.  p.  {Keved};  p.  pr  &  vb  n. 
  {Keying}.] 
  To  fasten  or  secure  firmly;  to  fasten  or  tighten  with  keys  or 
  wedges.  --Francis. 
 
  {To  key  up}. 
  a  (Arch.)  To  raise  (the  whole  ring  of  an  arch)  off  its 
  centering,  by  driving  in  the  keystone  forcibly. 
  b  (Mus.)  To  raise  the  pitch  of 
  c  Hence  fig.,  to  produce  nervous  tension  in 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Key  \Key\,  n. 
  A  simplified  version  or  analysis  which  accompanies  something 
  as  a  clue  to  its  explanation,  a  book  or  table  containing  the 
  solutions  to  problems,  ciphers,  allegories,  or  the  like  or  a 
  table  or  synopsis  of  conspicuous  distinguishing  characters  of 
  members  of  a  taxonomic  group 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Key  \Key\,  n.  (Teleg.) 
  A  metallic  lever  by  which  the  circuit  of  the  sending  or 
  transmitting  part  of  a  station  equipment  may  be  easily  and 
  rapidly  opened  and  closed;  any  device  for  closing  or  opening 
  an  electric  circuit. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Space  bar  \Space  bar\  or  key  \key\  (Mach.) 
  A  bar  or  key,  in  a  typewriter  or  typesetting  machine,  used 
  for  spacing  between  letters. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Quay  \Quay\,  n.  [F.  quai.  See  {Key}  quay.] 
  A  mole,  bank,  or  wharf,  formed  toward  the  sea,  or  at  the  side 
  of  a  harbor,  river,  or  other  navigable  water,  for  convenience 
  in  loading  and  unloading  vessels.  [Written  also  {key}.] 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Cotter  \Cot"ter\  (k[o^]t"t[~e]r),  n. 
  1.  A  piece  of  wood  or  metal,  commonly  wedge-shaped,  used  for 
  fastening  together  parts  of  a  machine  or  structure.  It  is 
  driven  into  an  opening  through  one  or  all  of  the  parts 
 
  Note:  [See  Illust.]  In  the  United  States  a  cotter  is  commonly 
  called  a  {key}. 
 
  2.  A  toggle. 
 
  From  WordNet  r  1.6  [wn]: 
 
  key 
  adj  1:  serving  as  an  essential  component;  "a  cardinal  rule";  "the 
  central  cause  of  the  problem";  "an  example  that  was 
  fundamental  to  the  argument";  "computers  are 
  fundamental  to  modern  industrial  structure"  [syn:  {cardinal}, 
  {central},  {fundamental},  {primal}] 
  2:  effective;  producing  a  desired  effect;  "the  operative  word" 
  [syn:  {operative}] 
  n  1:  metal  device  shaped  in  such  a  way  that  when  it  is  inserted 
  into  a  lock  the  lock's  mechanism  can  be  rotated 
  2:  something  crucial  for  explaining;  "the  key  to  development  is 
  economic  integration" 
  3:  pitch  of  the  voice;  "he  spoke  in  a  low  key" 
  4:  any  of  24  major  or  minor  diatonic  scales  that  provide  the 
  tonal  framework  for  a  piece  of  music  [syn:  {tonality}] 
  [ant:  {atonality}] 
  5:  one  thousand  grams;  the  basic  unit  of  mass  adopted  under  the 
  System  International  d'Unites  [syn:  {kilogram},  {kg},  {kilo}] 
  6:  a  coral  reef  off  the  southern  coast  of  Florida  [syn:  {cay}, 
  {Florida  keys}] 
  7:  a  list  of  words  or  phrases  that  explain  symbols  or 
  abbreviations 
  8:  used  to  wind  a  spring-driven  device  (as  a  clock)  [syn:  {winder}] 
  9:  a  lever  that  actuates  a  mechanism  when  depressed 
  v  1:  as  in  in  botany  or  biology,  for  example  [syn:  {identify},  {discover}, 
  {key  out},  {distinguish},  {describe},  {name}] 
  2:  provide  with  a  key;  "We  were  keyed  after  the  locks  were 
  changed  in  the  building" 
  3:  vandalize  a  car  by  scratching  the  sides  with  a  key" 
  4:  regulate  the  musical  pitch  of 
  5:  harmonize  with  or  adjust  to  "key  one's  actions  to  the 
  voters'  prevailing  attitude" 
 
  From  The  Free  On-line  Dictionary  of  Computing  (13  Mar  01)  [foldoc]: 
 
  key 
 
  1.    A  value  used  to  identify  a  {record}  in  a 
  database,  derived  by  applying  some  fixed  function  to  the 
  record.  The  key  is  often  simply  one  of  the  {fields}  (a 
  {column}  if  the  database  is  considered  as  a  table  with  records 
  being  rows,  see  "{key  field}").  Alternatively  the  key  may  be 
  obtained  by  applying  some  function,  e.g.  a  {hash  function},  to 
  one  or  more  of  the  fields.  The  set  of  keys  for  all  records 
  forms  an  {index}.  Multiple  indexes  may  be  built  for  one 
  database  depending  on  how  it  is  to  be  searched. 
 
  2.    A  value  which  must  be  fed  into  the 
  {algorithm}  used  to  decode  an  encrypted  message  in  order  to 
  reproduce  the  original  {plain  text}.  Some  encryption  schemes 
  use  the  same  (secret)  key  to  encrypt  and  decrypt  a  message, 
  but  {public  key  encryption}  uses  a  private"  (secret)  key  and 
  a  public"  key  which  is  known  by  all  parties. 
 
  (1997-04-26) 
 
 
 
  From  Easton's  1897  Bible  Dictionary  [easton]: 
 
  Key 
  frequently  mentioned  in  Scripture.  It  is  called  in  Hebrew 
  _maphteah_,  i.e.,  the  opener  (Judg.  3:25);  and  in  the  Greek  New 
  Testament  _kleis_,  from  its  use  in  shutting  (Matt.  16:19;  Luke 
  11:52;  Rev.  1:18,  etc.).  Figures  of  ancient  Egyptian  keys  are 
  frequently  found  on  the  monuments,  also  of  Assyrian  locks  and 
  keys  of  wood,  and  of  a  large  size  (comp.  Isa.  22:22). 
 
  The  word  is  used  figuratively  of  power  or  authority  or  office 
  (Isa.  22:22;  Rev.  3:7;  Rev.  1:8;  comp.  9:1;  20:1;  comp.  also 
  Matt.  16:19;  18:18).  The  "key  of  knowledge"  (Luke  11:52;  comp. 
  Matt.  23:13)  is  the  means  of  attaining  the  knowledge  regarding 
  the  kingdom  of  God.  The  "power  of  the  keys"  is  a  phrase  in 
  general  use  to  denote  the  extent  of  ecclesiastical  authority. 
 




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