1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Sour  \Sour\,  a.  [Compar.  {Sourer};  superl.  {Sourest}.]  [OE. 
  sour,  sur,  AS  s?r;  akin  to  D.  zuur,  G.  sauer,  OHG.  s?r, 
  Icel.  s?rr,  Sw  sur,  Dan.  suur,  Lith.  suras  salt,  Russ. 
  surovui  harsh,  rough.  Cf  {Sorrel},  the  plant.] 
  1.  Having  an  acid  or  sharp,  biting  taste,  like  vinegar,  and 
  the  juices  of  most  unripe  fruits;  acid;  tart. 
 
  All  sour  things  as  vinegar,  provoke  appetite. 
  --Bacon. 
 
  2.  Changed,  as  by  keeping,  so  as  to  be  acid,  rancid,  or 
  musty,  turned. 
 
  3.  Disagreeable;  unpleasant;  hence  cross;  crabbed;  peevish; 
  morose;  as  a  man  of  a  sour  temper;  a  sour  reply.  ``A  sour 
  countenance.''  --Swift. 
 
  He  was  a  scholar  .  .  .  Lofty  and  sour  to  them  that 
  loved  him  not  But  to  those  men  that  sought  him 
  sweet  as  summer.  --Shak. 
 
  4.  Afflictive;  painful.  ``Sour  adversity.''  --Shak. 
 
  5.  Cold  and  unproductive;  as  sour  land;  a  sour  marsh. 
 
  {Sour  dock}  (Bot.),  sorrel. 
 
  {Sour  gourd}  (Bot.),  the  gourdlike  fruit  {Adansonia 
  Gregorii},  and  {A.  digitata};  also  either  of  the  trees 
  bearing  this  fruit.  See  {Adansonia}. 
 
  {Sour  grapes}.  See  under  {Grape}. 
 
  {Sour  gum}  (Bot.)  See  {Turelo}. 
 
  {Sour  plum}  (Bot.),  the  edible  acid  fruit  of  an  Australian 
  tree  ({Owenia  venosa});  also  the  tree  itself  which 
  furnished  a  hard  reddish  wood  used  by  wheelwrights. 
 
  Syn:  Acid;  sharp;  tart;  acetous;  acetose;  harsh;  acrimonious; 
  crabbed;  currish;  peevish. 

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