noun

• Someone who hacks.
  "The Electrical Engineering Department, J. McKenzie in particular, for allowing me to use the PDP-1 computer to do the extensive computations, draw graphs, and even type this thesis. In this connection Charles Landau did some of the programming, Luella Thompson did most of the typing, and W. B. Ackermann helped when the machine would not cooperate. Many other computer hackers also willingly offered advice."
• Someone who hacks.
  "food hacker"
• Someone who hacks.
  "a phone hacker"
• Someone who hacks.

noun

• (US, road transport) One who operates a taxicab; a cabdriver.
  "Start runnin' for a streetcar and they open up with machine guns and bump two pedestrians, a hacker asleep in his cab, and an old scrubwoman on the second floor workin' a mop. And they miss the guy they're after."

verb

• (intransitive, chiefly British, dialectal, archaic) To speak with a spasmodic repetition of vocal sounds; to stammer, to stutter; also, to mumble and procrastinate in one's speech; to hem and haw.
  "The interrupting of the Miniſter by the Clark, and the vvhole congregation, vvhen he readeth the Pſalms, by taking every other verſe out of his mouth, vvith an hackering confuſed noiſe, eſpecially in countrey Churches, vvhere the people cannot read vvell."