(set theory) A set that is countable.

(fuzzy set theory, fuzzy logic) A set whose elements have degrees of membership, instead of only full and empty membership.

Alternative form of setlist

(UK) A flat triangular piece of plastic or other material, having corners of precise angles, used in technical drawing

(transitive) To release, to free, to give freedom to.

The equipment needed to play chess: a set of chess pieces and a chessboard.

(idiomatic, rhetorical with 'in') To enter / (idiomatic, rhetorical with 'on') To step onto

(idiomatic) To prepare; to establish the basis or required conditions.

To establish the speed for a group to move at, for example in a race. / (idiomatic) To establish a common goal by example.

A set of crockery for making and serving tea (the drink). / (Hong Kong) A meal set served during teatime., consisting of French toast and red bean ice. (2)]]