In
contract bridge, a
contract of six or seven, requiring that the
declarer take twelve or thirteen
tricks.
A contract of six, which requires declarer to take twelve tricks, is called a "small slam", and earns a bonus of 500 points (not vulnerable), or 750 (vulnerable) if made.
A contract of seven, which requires declarer to take all thirteen tricks, is called a "grand slam", and earns a bonus of 1000 points (not vulnerable) or 1500 points (vulnerable) if made.