1A reduction in a sum of money to be paid; a rebate.
historical A supposed mark of depreciation or dishonour; = "abatement".
It is generally considered improbable that such marks (other than those indicating illegitimacy) were ever used in practice.
Mid 16th century; earliest use found in Robert Record (c1512–1558), mathematician. From rebate + -ment, after Anglo-Norman and Middle French rebatement, Middle French rabattement reduction, discount, decrease.
A channel, recess, or ledge cut into a piece of stone, a wall, etc.
Chiefly with reference to the construction of the Temple of Solomon as described in the Old Testament and Hebrew Scriptures (1 Kings 6:6).
Late 16th century; earliest use found in Robert Dallington (b. 1561), author and courtier. From rebate + -ment.