3  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Trough  \Trough\,  n.  (Meteor.) 
  The  transverse  section  of  a  cyclonic  area  where  the 
  barometric  pressure,  neither  rising  nor  falling,  has  reached 
  its  lowest  point. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Trough  \Trough\,  n.  [OE.  trough,  trogh,  AS  trog,  troh;  akin  to 
  D.,  G.,  &  Icel.  trog,  Sw  tr[*a]g,  Dan.  trug;  probably 
  originally  meaning,  made  of  wood,  and  akin  to  E.  tree.  ?  & 
  241.  See  {Tree},  and  cf  {Trug}.] 
  1.  A  long,  hollow  vessel,  generally  for  holding  water  or 
  other  liquid,  especially  one  formed  by  excavating  a  log 
  longitudinally  on  one  side  a  long  tray;  also  a  wooden 
  channel  for  conveying  water,  as  to  a  mill  wheel. 
 
  2.  Any  channel,  receptacle,  or  depression,  of  a  long  and 
  narrow  shape;  as  trough  between  two  ridges,  etc 
 
  {Trough  gutter}  (Arch.),  a  rectangular  or  V-shaped  gutter, 
  usually  hung  below  the  eaves  of  a  house. 
 
  {Trough  of  the  sea},  the  depression  between  two  waves. 
 
  From  WordNet  r  1.6  [wn]: 
 
  trough 
  n  1:  a  narrow  depression  (as  in  the  earth  or  between  ocean  waves 
  or  in  the  ocean  bed) 
  2:  a  channel  along  the  eaves  or  on  the  roof;  collects  and 
  carries  away  rainwater  [syn:  {gutter}] 
  3:  a  concave  shape  with  an  open  top  [syn:  {basin},  {bowl}] 
  4:  a  treasury  for  government  funds  [syn:  {public  treasury},  {till}] 
  5:  a  container  (usually  in  a  barn  or  stable)  from  which  cattle 
  or  horses  feed  [syn:  {manger}] 

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