A student (or a former student) of a college / (slang) An inmate of a prison.

Of or relating to a college or its students.

To organize a farm or industrial enterprise on the basis of collective control

(mainly UK) Alternative spelling of gray-collar

Alternative form of green-collar

plural of tax collector

One who has the responsibility for collecting taxes.

A short period of very cold weather. / A permanent wave in the hair set by special solutions without the aid of any heating machine.

(idiomatic) To contract a cold. / (idiomatic) To encounter difficulties.

A dog's collar which tightens itself so as to choke the dog, when it pulls the leash. Used especially for training. ᵂ