2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Duct  \Duct\,  n.  [L.  ductus  a  leading,  conducting,  conduit,  fr 
  ducere  ductum,  to  lead.  See  {Duke},  and  cf  {Douche}.] 
  1.  Any  tube  or  canal  by  which  a  fluid  or  other  substance  is 
  conducted  or  conveyed. 
 
  2.  (Anat.)  One  of  the  vessels  of  an  animal  body  by  which  the 
  products  of  glandular  secretion  are  conveyed  to  their 
  destination. 
 
  3.  (Bot.)  A  large  elongated  cell,  either  round  or  prismatic, 
  usually  found  associated  with  woody  fiber. 
 
  Note:  Ducts  are  classified,  according  to  the  character  of  the 
  surface  of  their  walls,  or  their  structure,  as  annular, 
  spiral,  scalariform,  etc 
 
  4.  Guidance;  direction.  [Obs.]  --Hammond. 
 
  From  WordNet  r  1.6  [wn]: 
 
  duct 
  n  1:  a  bodily  passage  or  tube  conveying  a  secretion  or  other 
  substance  [syn:  {canal},  {channel}] 
  2:  a  continuous  tube  formed  by  a  row  of  elongated  cells  lacking 
  intervening  end  walls 
  3:  an  enclosed  conduit  for  a  fluid 

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