Dictionary
2 ENTRIES FOUND:

tear gas

noun

: a gas that makes people unable to see by causing their eyes to be filled with tears and that is used especially by the police or military to separate large groups of people

Full Definition of TEAR GAS

:  a solid, liquid, or gaseous substance that on dispersion in the atmosphere irritates mucous membranes resulting especially in blinding of the eyes with tears and is used chiefly in dispelling mobs

First Known Use of TEAR GAS

1917

tear gas

noun    (Medical Dictionary)

Medical Definition of TEAR GAS

:  a solid, liquid, or gaseous substance that on dispersion in the atmosphere irritates mucous membranes resulting especially in blinding of the eyes with tears

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