Source : Webster's Revised Unabridged Dictionary (1913)

Mortise \Mor"tise\, v. t. [imp. & p. p. {Mortised}; p. pr. & vb.
   n. {Mortising}.]
   1. To cut or make a mortisein.

   2. To join or fasten by a tenon and mortise; as, to mortise a
      beam into a post, or a joist into a girder.