Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
drop-leaf is a noun meaning "a hinged leaf on a table that can be raised and supported by a bracket". It carries one recorded sense.
a hinged leaf on a table that can be raised and supported by a bracket
Definitions, synonyms and semantic relations for drop-leaf come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.