Wordnet 3.0
NOUN (1)
1. 
 struggle for the English throne (1455-1485) between the house of York (white rose) and the house of Lancaster (red rose) ending with the accession of the Tudor monarch Henry VII; 
[syn: War of the Roses, Wars of the Roses]
WordNet (r) 3.0 (2006):
War of the Roses
    n 1: struggle for the English throne (1455-1485) between the
         house of York (white rose) and the house of Lancaster (red
         rose) ending with the accession of the Tudor monarch Henry
         VII [syn: War of the Roses, Wars of the Roses]