(military, slang) On an aircraft carrier, the state where fighters and crew are on guard, standing by in the aircraft, strapped in and ready to be launched in five minutes or less.

(rugby) The five forwards who form the front row and the second row in the scrum. / (comedy) A five-minute set of jokes performed by a stand-up comedian, usually made up of only their best material.

plural of five-and-ten

(singular only, mathematics) A particular lemma that claims the existence of a particular isomorphism in a commutative diagram given certain other homomorphisms in the diagram.

The five items of faith worn by Khalsa Sikhs: kaccha, kara, kirpan, kanga and kesh.

(archaic) Twenty-five.

(US, basketball) The five players who are initially playing for a team at the start of a game.

(soccer) a variation of soccer played on a smaller pitch, and with only five players in a team.

(Europe, rugby union) an annual rugby union tournament between the nations of France, England, Wales, Ireland and Scotland, the predecessor to the Six Nations tournament.

(card games) five cards of the same rank, often only possible if one or more wild cards are being used.