from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A short stick or club, especially a police officer's club.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A short rounded club used by policemen.
from the GNU version of the Collaborative International Dictionary of English
- n. see billy, n. 1.
- n. a policeman's club; a nightstick.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a short stout club used primarily by policemen
Perhaps alteration of *bully club; see bully1 or from billet2.(American Heritage® Dictionary of the English Language, Fourth Edition)