Source : Webster's Revised Unabridged Dictionary (1913)

Seven-up \Sev"en-up`\, n.
   The game of cards called also {all fours}, and {old sledge}.
   [U. S.]

Source : WordNet®

seven-up
     n : a form of all fours in which a total of seven points is game
         [syn: {old sledge}]