A modelled or incised surface from which an impression can be taken. Obsolete.

A mould of something to be cast or struck in relief; a countersunk die.

An instrument for impressing something. An instrument or apparatus which produces a mark or figure by pressing; a stamp or die; (also) a mould. Also…

a mould which can be removed in pieces and then reassembled; (also) a mould consisting of separate pieces of metal, etc., fitted together upon the…

a rigid mould which holds casting material.

A mould for a piece of sculpture, etc. Also, more generally: a reverse impression of something. Cf. negative, adj. 11a.

in Sculpture, a simple negative mould which has to be broken to release the cast inside it.