from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of various agents that on dispersal, usually from grenades or projectiles, irritate the eyes and cause blinding tears.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Any
lachrymatory non-lethalchemical compound that causes the eyes to sting and water and/or irritates the respiratory system, mostly used for controlling crowds during riots or as self-defense.
- verb To use tear gas.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds
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