(nautical) The time taken for a sail to shake or shiver twice as a ship comes into the wind. / (idiomatic) A very short time.

(transitive, idiomatic) To relinquish control or possession of something to someone. / (transitive, idiomatic) To deliver (someone to an enemy, police, etc.).

(literally) An owl (order Strigiformes) that is nocturnal. / (idiomatic) One who goes to bed late, or stays up late at night or in the early hours of the morning.

(computing, slang) To use products or services one is selling internally, in order to understand their limitations.

(American football) In the AFL, a warning given with one minute to go before the end of a half, after which special rules apply, eg, stoppage of the game clock after very first down.

(card games) In card playing, to accidentally reveal one's cards or hand. / (figuratively) To inadvertently reveal any secret, particularly a secret that puts one at an advantage or disadvantage.

(American football) Either of two imaginary lines across the football field touching one of the two apices of the football which point toward either the defensive side or the offensive side before the center is allowed to touch the ball before each play.

(American football) The scrimmage line on the offensive side of the football field. / (American football) Offensive line.

Alternative letter-case form of truth or dare.

(idiomatic) A recording artist known for only one hit song, especially after failing at subsequent attempts at success.