(music) An interval of one fifth.

(music) The E string of a violin.

(card games) In piquet, a sequence of five playing cards of the same suit; equivalent to a straight flush in poker

(US, informal) a quin or quintuplet.

(firefighting) A vehicle used by firefighters that combines the capabilities of a fire engine and a fire truck, having the ability to provide vertical access as well as pump water to fight a fire.

(fencing) quinte; the fifth fencer in parrying or attacking position.