rebate

A deduction from an amount that is paid; an abatement.

The return of part of an amount already paid.

The edge of a roll of film, from which no image can be developed.

A rectangular groove made to hold two pieces (of wood etc) together; a rabbet.

For your existing windows, the glazing rebates will also have to be deepened to provide the extra gap.

A piece of wood hafted into a long stick, and serving to beat out mortar.

To deduct or return an amount from a bill or payment

To diminish or lessen something

To beat to obtuseness; to deprive of keenness; to blunt; to turn back the point of, as a lance used for exercise.

But doth rebate and blunt his natural edge.

Then near the corslet, at the monarch’s heart, With all his strength, the youth directs his dart: But the broad belt, with plates of silver bound, The point rebated, and repell’d the wound.

To cut a rebate (or rabbet) in something

To abate; to withdraw.

he began a little to rebate from certain points of popery