The Collaborative International Dictionary
Seven-up \Sev"en-up`\, n. The game of cards called also all fours, and old sledge.
Douglas Harper's Etymology Dictionary
children's game, 1830; with capital initials, as the proprietary name of a brand of carbonated drink, it is attested from 1928.
Wiktionary
n. 1 A children's game in which players with their eyes shut try to guess which of a group of seven people pressed down their thumbs. 2 (rft-sense) (context card games English) A card game similar to all fours.
WordNet
n. a form of all fours in which a total of seven points is game [syn: old sledge]
Usage examples of "seven-up".
Seven-Up and a warm smile that hints she can be as sympathetic to misunderstood husbands as to browbeaten wives.
Dick Vollman, Chip Hobart, and sixteen-year-old Tony Donahue sat in a breezeway half a block up from Larry's tract house, passing a bottle of Canadian Club back and forth, chasing it with warm Seven-Up.