Dorsum

[dɔ:sәm]

解释:

(noun.) 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'.

整理:雪莉--From WordNet

解释:

(n.) The ridge of a hill.

(n.) The back or dorsal region of an animal; the upper side of an appendage or part; as, the dorsum of the tongue.

整理:塔尼娅