(1):

(n.) A carver's mixture of resin, whiting, and glue, used instead of plaster of Paris for ornamenting walls and cornices.

(2):

(n.) A mortar made of sand and cement.

(3):

(n.) A preparation of which printer's rollers are made.

(4):

(n.) A preparation used in currying leather.

(5):

(n.) Composition paid by a debtor.

(6):

(n.) Short for Composition; - used, esp. in England, colloq. in various trade applications;

(7):

(n.) A composition for billiard balls.