Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
blue-collar is an adjective meaning "of or designating manual industrial work or workers". It carries 2 recorded senses.
of or designating manual industrial work or workers
of those who work for wages especially manual or industrial laborers
“party of the propertyless proletariat”
Definitions, synonyms and semantic relations for blue-collar come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.