Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
seven-up is a noun meaning "a form of all fours in which a total of seven points is game". It carries one recorded sense.
a form of all fours in which a total of seven points is game
Definitions, synonyms and semantic relations for seven-up come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.