Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
chain-smoker is a noun meaning "a heavy smoker (usually of cigarettes) who lights one off of another". It carries one recorded sense.
a heavy smoker (usually of cigarettes) who lights one off of another
Definitions, synonyms and semantic relations for chain-smoker come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.