've

Etymology
Contraction of.

Verb

 * 1) Have in its sense marking the perfect or retrospective tense.
 * 2)  Have in its other uses.
 * 1)  Have in its other uses.

Usage notes
In many dialects, -'ve is only used to mark the perfect aspect ("I've done something" = "I have done something"), not to signify possession ("I have something"), necessity ("I have to do something"), etc. In others, -'ve is used more broadly; this is sometimes proscribed.