Langtry, Lillie Syllabification: (Lang·try, Lillie)Pronunciation: /ˈlaNGtrē/Definition of Langtry, Lillie (1853–1929), British actress; born Emilie Charlotte le Breton. She was the mistress of the Prince of Wales, who later became Edward VII. Langtry, Lillie in other Oxford dictionaries Definition of Langtry, Lillie in the British & World English dictionary