1 [intransitive and transitive]
to cut something roughly or violently
hack (away) at something
She hacked away at the ice, trying to make a hole.
hack something off/down etc
Whole forests have been hacked down.
hack your way through/into something
He hacked his way through the undergrowth.
Both men had been hacked to death (=killed using large knives).
2TD [intransitive and transitive]
to secretly find a way of getting information from someone else's computer or changing information on it ➔ hacker
Somebody hacked into the company's central database.
He managed to hack the code.
to feel that you cannot continue to do something that is difficult or boring:
I've been doing this job for years, but I just can't hack it anymore.
4 [intransitive always + adverb/preposition] British EnglishDSH
to ride a horse along roads or through the country
to cough in a loud unpleasant way
hack somebody offphrasal verb
His attitude really hacks me off!