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