have on

Short definition from Wiktionary

Verb

1. 1
   To be wearing.
2. 2
   To have turned on (an electronic device).
3. 3
   To trick or deceive deliberately; to play a prank on.
4. 4
   To have (something) scheduled.
5. 5
   To possess at the point of arrest.
6. 6
   To possess evidence of wrongdoing regarding (someone); to press charges on (someone).