from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A traitor who serves as the puppet of the enemy occupying his or her country.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A traitor who collaborates with the enemy.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. someone who collaborates with an enemy occupying force
After Vidkun Quisling (1887-1945), head of Norway's government during the Nazi occupation (1940-1945).(American Heritage® Dictionary of the English Language, Fourth Edition)
1940, after Vidkun Quisling (1887–1945), who ruled the Nazi collaborationist government of Norway during World War Two. Romanization of the Danish place name Kvislemark. (Wiktionary)