Definitions

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

Etymologies

Latin lacrimāre, to cry (from lacrima, tear; see lachrymal) + -ator.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From lachrymation + -or (Wiktionary)

Examples

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