Source : Webster's Revised Unabridged Dictionary (1913)

Rabbet \Rab"bet\, v. t. [imp. & p. p. {Rabbeted}; p. pr. & vb.
   n. {Rabbeting}.] [F. raboter to plane, plane down,rabot a
   plane; pref. re- re- + OF. abouter, aboter. See {Abut}, and
   cf. {Rebut}.]
   1. To cut a rabbet in; to furnish with a rabbet.

   2. To unite the edges of, as boards, etc., in a rabbet joint.