prevailing party

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

• noun law : The party in a civil lawsuit who the factfinder determines to be right, and who, in some jurisdictions, may recover attorney's fees and other expenses associated with the prosecution or defense of the lawsuit.

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

• noun the party in a lawsuit who obtains a judgment in their own favor