Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
open-collared is an adjective meaning "of a shirt; not buttoned at the neck". It carries one recorded sense.
of a shirt; not buttoned at the neck
“dressed casually in shorts and an open-collared shirt”
Definitions, synonyms and semantic relations for open-collared come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.