Noun
Italian pope from 1458 to 1464 who is remembered for his unsuccessful attempt to lead a crusade against the Turks (1405-1464)
Source: WordNetII main, Italian Pio II main), born Enea Silvio Bartolomeo Piccolomini ( Latin Aeneas Silvius Bartholomeus; 18 October 1405 – 14 August 1464) was Pope from 19 August 1458 to his death in 1464. Source: Internet