Source : Webster's Revised Unabridged Dictionary (1913)

Yokefellow \Yoke"fel`low\, n. [Yoke + fellow.]
   An associate or companion in, or as in; a mate; a fellow;
   especially, a partner in marriage. --Phil. iv. 3.

         The two languages [English and French] became
         yokefellows in a still more intimate manner. --Earle.

         Those who have most distinguished themselves by railing
         at the sex, very often choose one of the most worthless
         for a companion and yokefellow.          --Addison.