Quit n. : Any one of numerous species of small passerine birds native of tropical America. See Banana quit, under Banana, and Guitguit.

Quit v. : Released from obligation, charge, penalty, etc.; free; clear; absolved; acquitted.

Quit imp. & p. p. : of Quit

Quit a. : To set at rest; to free, as from anything harmful or oppressive; to relieve; to clear; to liberate.

Quit a. : To release from obligation, accusation, penalty, or the like; to absolve; to acquit.

Quit a. : To discharge, as an obligation or duty; to meet and satisfy, as a claim or debt; to make payment for or of; to requite; to repay.

Quit a. : To meet the claims upon, or expectations entertained of; to conduct; to acquit; -- used reflexively.

Quit a. : To carry through; to go through to the end.

Quit a. : To have done with; to cease from; to stop; hence, to depart from; to leave; to forsake; as, to quit work; to quit the place; to quit jesting.

Quit v. i. : To away; to depart; to stop doing a thing; to cease.

Example:
How do I Quit smoking when my husband refuses to Quit smoking in the house?

Taxonomy
quit smoking, smoking cigarettes, stop smoking, quitting smoking, ways to quit smoking, aides.

Defination from the web:
quit smoking.