major suit

from WordNet (r) 3.0 (2006)

major suit
    n 1: (bridge) a suit of superior scoring value, either spades or
         hearts

from The Collaborative International Dictionary of English v.0.48

major suit \major suit\ n. (Bridge)
   A suit of playing cards which has higher scoring value;
   specifically, either spades or hearts. Contrasted with a
   {minor suit}, being either diamonds or clubs.
   [WordNet 1.5 +PJC]