(informal, euphemistic) Ex-girlfriend or ex-boyfriend. Often used in songs.

(linguistics, philosophy) A distinction between the use of a word for its meaning (as in "Cheese is derived from milk") and the mention of a word as a lexical unit (as in " 'Cheese' is derived from a word in Old English").

plural of use-mention distinction

(idiomatic) To think, especially in a careful or clever manner.

(idiomatic) To think carefully, especially as an alternative to being guided by one's emotions. / (humorous) To headbutt.

(law) A person for whose use land, etc., is granted to another.

plural of therapeutic use exemption

(sports pharmacology) an exemption to allow use of a banned substance for therapeutic purposes so that a ban from competition will not result when testing returns positive results

(archeology) A technique for identifying the functions of artefact tools by closely examining their working surfaces and edges.

(simile) Totally useless.