"teargas" in the noun sense
1. tear gas, teargas, lacrimator, lachrymator
a gas that makes the eyes fill with tears but does not damage them used in dispersing crowds
"teargas" in the verb sense
1. teargas
attack with teargas subject to teargas fumes
"The students were teargassed during the riot"
Source: WordNet® (An amazing lexical database of English)
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