(computing) A hacking session extended long outside normal working times, especially one longer than 12 hours; sometimes an all-nighter.

(pathology) A small and frequent cough, usually short and dry; a broken cough with a rough and loud sound; a hacking cough.

(transitive) To remove by hacking; to cut off / (transitive) To annoy

plural of hack saw

The act of intercepting and listening in on telephone calls or voicemail messages without the consent of the parties who are speaking.

A miner's pickax or hack. / A chisel or similar tool for cutting metal, as wire, into nails.

plural of hack-iron

plural of life hack

Alternative spelling of lifehack

(transitive or intransitive) To make progress on a difficult problem; to continue trying. / Used other than figuratively or idiomatically: see hack, away.