from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A herbicide containing trace amounts of the toxic contaminant dioxin that was used in the Vietnam War to defoliate areas of forest.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. a herbicide and defoliant used by US forces in Vietnam.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a herbicide used in the Vietnam War to defoliate forest areas
From the orange identifying strip on drums in which it was stored.(American Heritage® Dictionary of the English Language, Fourth Edition)
That was followed by two C-123 defoliation planes which sprayed Agent Orange in a circle around the base to the depth of one mile.