Lillie Langtry lil·lie·langtry uncommon noun 1. British actress and mistress of the prince who later became Edward VII (1853-1929) SynonymsLangtryLillie Langtrythe Jersey LillieEmilie Charlotte le Breton Related words Broader terms actress WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.