from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Chiefly British Very tired; exhausted.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. tired or exhausted.
- v. Simple past tense and past participle of knacker.
- adj. Broken, inoperative.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. very tired
From the verb knacker. (Wiktionary)
From "ready for the knacker's yard" or "fit to be knackered", meaning "worn-out livestock, fit to be slaughtered and rendered". (Wiktionary)