Rabbet v. t. : To cut a rabbet in; to furnish with a rabbet.

Rabbet v. t. : To unite the edges of, as boards, etc., in a rabbet joint.

Rabbet n. : A longitudinal channel, groove, or recess cut out of the edge or face of any body; especially, one intended to receive another member, so as to break or cover the joint, or more easily to hold the members in place; thus, the groove cut for a panel, for a pane of glass, or for a door, is a rabbet, or rebate.

Rabbet n. : Same as Rabbet joint, below.

Example:
what are the dimensions for a Rabbet joint?

Taxonomy
edge, free encyclopedia, recess, Rebate plane, search, groove, machineable, cross-section, rabbat, glazing, provision, pane of glass, putty, accommodate, back panel, cabinet, passes, single pass.

Defination from the web:
rabbet is two-sided and open to the edge or end of the surface into which it is cut. ... An example of the use of a rabbet is in a glazing bar where it makes provision for the insertion of the pane of glass and putty. ...