(philately) Of a postage stamp, cancelled in the normal course of postal business, rather than to devalue it for sale to collectors.

(law) a doctrine in intellectual property law that permits one party to make use of another party's protected intellectual property (such as a copyright or trademark) under narrowly defined circumstances.

(euphemistic) Dead; deceased. / (euphemistic) Not still employed at a company, of someone who left or was let go.

excessive use.

plural of fair use

(US) The semi-official use of a drug that has not yet gained official approval in cases where no other treatment is possible

To treat someone badly, cruelly or unkindly.

Bad, cruel or unkind treatment.

simple past tense and past participle of use up

Worn out; depleted; exhausted; having nothing left; useless, due to the expenditure of all resources.