Quick definitions from WordNet (hack)

▸ noun:  a saddle horse used for transportation rather than sport etc.
▸ noun:  a horse kept for hire
▸ noun:  an old or over-worked horse
▸ noun:  a tool (as a hoe or pick or mattock) used for hacking the soil
▸ noun:  one who works hard at boring tasks
▸ noun:  a mediocre and disdained writer
▸ noun:  a car driven by a person whose job is to take passengers where they want to go in exchange for money
▸ noun:  a politician who belongs to a small clique that controls a political party for private rather than public ends
▸ verb:  informal: be able to manage or manage successfully ("I can't hack it anymore")
▸ verb:  fix a computer program piecemeal until it works ("I'm not very good at hacking but I'll give it my best")
▸ verb:  cough spasmodically ("The patient with emphysema is hacking all day")
▸ verb:  kick on the shins
▸ verb:  kick on the arms
▸ verb:  cut away ("He hacked with way through the forest")
▸ verb:  significantly cut up a manuscript
▸ verb:  cut with a hacking tool
▸ name:  A surname (rare: 1 in 50000 families; popularity rank in the U.S.: #6758)

---

▸ Also see hack