from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Tear gas.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any substance that causes tears; especially tear gas
from the GNU version of the Collaborative International Dictionary of English
- n. A chemical substance that causes tears to flow; same as lacrimator.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds
Latin lacrimāre, to cry (from lacrima, tear; see lachrymal) + -ator.(American Heritage® Dictionary of the English Language, Fourth Edition)
From lachrymation + -or (Wiktionary)