from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Destructive nuclear capacity exceeding the amount needed to destroy an enemy.
- n. Excessive killing.
- n. An excess of what is necessary or appropriate for a particular end: "government overkill in dealing with dissent” ( Jesse Unruh).
- transitive v. To destroy (an enemy or enemy target) with more nuclear force than necessary.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A destructive capacity that exceeds that needed to destroy an enemy; especially with nuclear weapons.
- n. An unnecessary excess of whatever is needed to achieve a goal.
- v. To destroy something with more (nuclear) force than is required.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the capability to obliterate a target with more weapons (especially nuclear weapons) than are required
- n. any effort that seems to go farther than would be necessary to achieve its goal
From over- + kill. (Wiktionary)