(Greek mythology) One of the Dioscuri / (astronomy) A double star in the constellation Gemini; alpha (α) Geminorum.

(law enforcement, slang) A criminal investigation that has not been solved after a considerable time but remains “on the books” and may be reopened when new evidence appears.

(US) Synonym of dress-down Friday

A small flat case containing magnetic tape on two reels, used to record and play back audio and video material. / Any similar small cartridge, such as for a computer disk or cassette air conditioner

To come to an accounting; to examine and strike the balance of debt and credit; reckon. / (idiomatic, archaic) To vomit.

Alternative spelling of headcase

Alternative spelling of headcase / Used other than figuratively or idiomatically: see head, case.

(slang) A gay person who pretends to be heterosexual. / A person who is shunned, ignored, or considered to be an embarrassment.

(law) A legal action intended to set a precedent. / (computing) Any of a set of conditions and variables used to test an application.

(idiomatic) To make damaging or spiteful remarks.