Tolstoy, Count Leo Syllabification: (Tol·stoy, Count Leo)Pronunciation: /ˈtôlˌstoi, ˈtōl-/Definition of Tolstoy, Count Leo (1828–1910), Russian writer; Russian name Lev Nikolaevich Tolstoi. He is noted for the novels War and Peace (1863–69), an epic tale of the Napoleonic invasion, and Anna Karenina (1873–77). Tolstoy, Count Leo in other Oxford dictionaries Definition of Tolstoy, Count Leo in the British & World English dictionary