Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
double-decker is a noun meaning "a vehicle carrying many passengers; used for public transport". It carries one recorded sense.
a vehicle carrying many passengers; used for public transport
“he always rode the bus to work”
Definitions, synonyms and semantic relations for double-decker come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.