Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
flat-top is an adjective meaning "having a flat or flattened upper surface". It carries one recorded sense.
having a flat or flattened upper surface
Definitions, synonyms and semantic relations for flat-top come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.