Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
teargas is a noun and verb meaning "a gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds". It carries 2 recorded senses.
a gas that makes the eyes fill with tears but does not damage them; used in dispersing crowds
attack with teargas; subject to teargas fumes
“The students were teargassed during the riot”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for teargas come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.