Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
all-rounder is a noun meaning "a versatile person who is expert at many things". It carries one recorded sense.
a versatile person who is expert at many things
“she's the best all-rounder they've seen in years”
Definitions, synonyms and semantic relations for all-rounder come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.