from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A pocketknife having a spring-operated blade that opens instantly when a release on the handle is pressed. Also called switchblade knife, switch knife.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A folding knife with a blade which opens automatically (under spring pressure) when a button is pressed.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a pocketknife with a blade that springs open at the press of a button
Sorry, no etymologies found.