|Origin:||hackney 'horse for ordinary riding'; HACKNEYED|
a writer who does a lot of low quality work, especially writing newspaper articles:
A Sunday newspaper hack uncovered the story.
an unimportant politician:
The meeting was attended by the usual old party hacks.
a way of using a computer to get into someone else's computer system without their permission
4 American English informalBOTTC
a taxi, or a taxi driver
an act of hitting something roughly with a cutting tool:
One more hack and the branch was off.
an old tired horse
a horse you can pay money to ride on
8 British EnglishDSH
a ride on a horse:
a long hack across the fields