‖Dor″sum (?), n. 1. The ridge of a hill.
2. (Anat.) The back or dorsal region of an animal; the upper side of an appendage or part; as, the dorsum of the tongue.
Webster's Dictionary 1913
‖Dor″sum (?), n. 1. The ridge of a hill.
2. (Anat.) The back or dorsal region of an animal; the upper side of an appendage or part; as, the dorsum of the tongue.