Definitions
1.NounA sudden, vigorous pull (sometimes defined as mass times jerk, or rate of change of force)."He unjammed the rope with a short yank."
2.NounA masturbation session.
3.Noun alternative form of shank (“stabbing weapon”).
4.VerbTo pull (something) with a quick, strong action.
5.VerbTo remove from distribution."They yanked the product as soon as they learned it was unsafe."
6.NounAlternative letter-case form of Yank (“Yankee”).