Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
games-master is a noun meaning "the teacher in charge of games at a school". It carries one recorded sense.
the teacher in charge of games at a school
Definitions, synonyms and semantic relations for games-master come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.