(1):

(n.) See Offset, 7.

(2):

(n.) Same as Offset, n., 4.

(3):

(n.) A counterclaim; a cross debt or demand; a distinct claim filed or set up by the defendant against the plaintiff's demand.

(4):

(n.) That which is set off against another thing; an offset.

(5):

(n.) That which is used to improve the appearance of anything; a decoration; an ornament.