Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
o'casey is a noun meaning "Irish playwright (1880-1964)". It carries one recorded sense.
Irish playwright (1880-1964)
Definitions, synonyms and semantic relations for o'casey come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.