[1] : The Collaborative International Dictionary of English v.0.48

dorsum \dor"sum\, n. l.
   1. the ridge of a hill.
      1913 webster

   2. anat. the back or dorsal region of an animal; the upper
      side of an appendage or part; as, the dorsum of the
      tongue. dortour

[2] : WordNet (r) 2.0

dorsum
     n 1: the posterior part of a human or animal body from the neck
          to the end of the spine; "his back was nicely tanned"
          syn: back
     2: the back of the body of a vertebrate or any analogous
        surface as the upper or outer surface of an organ or
        appendage or part; "the dorsum of the foot"
     also: dorsa pl
see also:
back dorsa 

Dorsum >> D Words
Dorsum, definition of term: Dorsum
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