Definition of tear gas noun from the Oxford Advanced Learner's Dictionary


tear gas

BrE BrE//ˈtɪə ɡæs//
; NAmE NAmE//ˈtɪr ɡæs//
[uncountable] The police, Weapons
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a gas that makes your eyes sting and fill with tears, used by the police or army to control crowds The police fired tear gas at the protesters. See related entries: The police, Weapons
See the Oxford Advanced American Dictionary entry: tear gas