Lachrymator definitions

lăk'rə-mā'tər
A substance, such as tear gas, that causes tears to flow.
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A substance, as tear gas, that irritates the eyes and produces tears.
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A substance, such as tear gas, that causes tears to flow.
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Any substance that causes tears; especially tear gas.
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Origin of lachrymator

Latin lacrimāre to cry (from lacrima tear lachrymal) –ator