The Collaborative International Dictionary of English v.0.48:

Subhumerate \Sub*hu"mer*ate\, v. t. [See Sub-, Humerus.]
   To place the shoulders under; to bear. [Obs.]
   [1913 Webster]

         Nothing surer ties a friend than freely to subhumerate
         the burden which was his.                --Feltham.
   [1913 Webster]