资料来源 : Webster's Revised Unabridged Dictionary (1913)

Alimentary \Al`i*men"ta*ry\, a. [L. alimentarius, fr. alimentum:
   cf. F. alimentaire.]
   Pertaining to aliment or food, or to the function of
   nutrition; nutritious; alimental; as, alimentary substances.

   {Alimentary canal}, the entire channel, extending from the
      mouth to the anus, by which aliments are conveyed through
      the body, and the useless parts ejected.

资料来源 : WordNet®

alimentary canal
     n : tubular passage of mucous membrane and muscle extending
         about 8.3 meters from mouth to anus; functions in
         digestion and elimination [syn: {alimentary tract}, {digestive
         tube}, {digestive tract}, {gastrointestinal tract}, {GI
         tract}]