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Entry 3 senses · 2 variants Webster, 1913

Mortise

/môrtĭs/ · Mor·tise · IPA /ˈmɔː(ɹ).tɪs/
01 n. A cavity cut into a piece of timber, or other material, to receive something (as the end of another piece) made to fit it, and called a tenon.
  1. 1.
    A cavity cut into a piece of timber, or other material, to receive something (as the end of another piece) made to fit it, and called a tenon.
Phrases & compounds
Mortise and tenon — made with a mortise and tenon; joined or united by means of a mortise and tenon; -- used adjectively.
Mortise joint — a joint made by a mortise and tenon.
Mortise lock — See under Lock.
Mortise wheel — a cast-iron wheel, with wooden clogs inserted in mortises on its face or edge; -- also called mortise gear, and core gear.
02 v. t. To cut or make a mortise in.
imp. & p. p. Mortised; p. pr. & vb. n. Mortising
  1. 1.
    To cut or make a mortise in.
  2. 2.
    To join or fasten by a tenon and mortise; as, to mortise a beam into a post, or a joist into a girder.