from The American Heritage® Dictionary of the English Language, 4th Edition
- n. One who plays tricks or pranks.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. One who performs pranks.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. someone who plays practical jokes on others
Derived from prank + -ster. (Wiktionary)