WordWeb Online

1. The posterior part of a human (or animal) body from the neck to the end of the spine
   "his dorsum was nicely tanned";
   - 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"

Derived forms: dorsa

Type of: body part

Part of: body, torso, trunk

Encyclopedia: Dorsum