1. [ noun ] (chemistry,arms) a gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds
Synonyms: lacrimator lachrymator tear_gas
Related terms: gas chemical_weapon chlorobenzylidenemalononitrile chloroacetophenone nitrochloromethane
2. [ verb ] (military) attack with teargas; subject to teargas fumes

"The students were teargassed during the riot"

Related terms: gas
Similar spelling:   tear_gas