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