(programming) The technique of writing a function so that recursive calls are only done immediately before function return, particularly when recursive control structures are used in place of iterative ones.

(nautical) A block having a rope about it, and on an end hanging several feet from it.

(idiomatic) To turn away from someone or something, in preparation for running away; to reverse direction; to leave or flee.

plural of tail pad

(idiomatic) The practice of flipping a coin in the air, to choose between two alternatives based on which side lands face up.

Alternative spelling of swallowtailed

(Britain, of traffic) Arranged in close formation, one behind the other.

(Britain, of traffic) Moving slowly in this manner. / Entirely, from head to toe.

(Australia) A minor traffic accident where one vehicle runs in to the back of another.

Used other than figuratively or idiomatically: The tail of a whale. / (slang) An unintentional display of a thong above the waistband of trousers etc. / A kind of automotive spoiler.