hack

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A horse used for riding or driving; a hackney.
• noun A worn-out horse for hire; a jade.
• noun One who undertakes unpleasant or distasteful tasks for money or reward; a hireling.
• noun A writer hired to produce routine or commercial writing.
• noun A carriage or hackney for hire.
• noun A taxicab.
• intransitive verb To let out (a horse) for hire.
• intransitive verb To make banal or hackneyed with indiscriminate use.
• intransitive verb To drive a taxicab for a living.
• intransitive verb To work for hire as a writer.
• intransitive verb To ride on horseback at an ordinary pace.
• adjective By, characteristic of, or designating routine or commercial writing.
• adjective Hackneyed; banal.
• intransitive verb To cut or chop with repeated and irregular blows.
• intransitive verb To break up the surface of (soil).
• intransitive verb Informal To alter (a computer program).
• intransitive verb To gain access to (a computer file or network) illegally or without authorization.
• intransitive verb Slang To cut or mutilate as if by hacking.
• intransitive verb Slang To cope with successfully; manage.
• intransitive verb To chop or cut something by hacking.
• intransitive verb To write or refine computer programs skillfully.
• intransitive verb To use one's skill in computer programming to gain illegal or unauthorized access to a file or network.
• intransitive verb To cough roughly or harshly.
• noun A rough, irregular cut made by hacking.
• noun A tool, such as a hoe, used for hacking.
• noun A blow made by hacking.
• noun A rough, dry cough.

from The Century Dictionary.

• noun A haw; a hedge.
• To place (bricks) in rows to dry before burning.
• noun Same as hackbut.
• To ride on the road; ride with an ordinary horse or pace: opposed to cross-country riding, cavalry riding, etc.
• To drive in a hack.
• To be common or vulgar; turn prostitute; have to do with prostitutes.
• To let out for hire: as, to hack a horse.
• noun A horse kept for hire; hence, a horse adapted for general service, such as that required of horses kept for hire, especially for driving and riding.
• noun A carriage kept for hire; a hackney-coach.
• noun A drudge; one who is overworked; especially, a literary drudge; a person hired to write according to direction or demand.
• noun A procuress; a prostitute.
• Hired; mercenary; much used or worn, like a hired horse; hackneyed: as, a hack writer.
• noun A grated frame. , ,
• noun In falconry, partial liberty. See the extract.
• To make irregular cuts in or upon; mangle by repeated strokes of a cutting instrument; cut or notch at random.
• To dress off the more prominent parts of (stone) with a hack-hammer.
• To chap; frost-bite, as the hands.