major suit

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A suit of superior scoring value, either spades or hearts in bridge.

from the GNU version of the Collaborative International Dictionary of English.

• noun (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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun bridge Either of the suits of spades (♠) and hearts (♥), which rank higher than the minor suits (diamonds and clubs).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun (bridge) a suit of superior scoring value, either spades or hearts