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

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

plural of film set

(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.

plural of tea set

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)]]

(topology) A set whose complement is open.

(topology) Informally, a set such that the target point of a movement by a small amount in any direction from any point in the set is still in the set; exemplified by a full circle without its boundary.