(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.

(software engineering) A potential scenario in which a system receives an external request (such as user input) and responds to it.

Frequently used.

(euphemistic) Still alive; not dead. / Still employed at a company.

(archaic) Customary practice.

plural of used bookstore

A bookstore that principally sells secondhand or used books.

(advertising) A promotion that offers some additional bonus to customers who refer further customers.