(card games) One of the 52 playing cards in a standard deck.

a public executioner / the gallows / death / the devil

(electricity) A type of audio connector.

Alternative spelling of blackjack / Caranx lugubris, a gamefish / Bidens spp., from the family of Asteraceae / (obsolete) The larva of a turnip sawfly (Athalia rosae) / (mining, mineralogy) Sphalerite.

Alternative spelling of crackerjack

Alternative spelling of hijack

Children’s toy consisting of a small box from which a male figure pops out unexpectedly after some turnings of a crank.

(uncountable) The illness yellow fever. / (countable, nautical) A yellow flag used by ships as a warning of disease. / (countable) The fish Caranx bartholomaei.

A physical exercise performed by jumping to a position with the legs spread wide and the hands touching overhead and then returning to a position with the feet together and the arms at the sides.

A compact folding knife. / The front-dive pike, in which the body folds and unfolds. / (colloquial) A semi-trailer truck accident in which the vehicle mimics the closing of a jack-knife.