Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
safe-deposit is a noun meaning "a fireproof metal strongbox (usually in a bank) for storing valuables". It carries one recorded sense.
a fireproof metal strongbox (usually in a bank) for storing valuables
Definitions, synonyms and semantic relations for safe-deposit come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.