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.