Austerlitz UK /ˈɔːstəlɪts/US /ˈɔstɚlɪts/ noun1 •Former name of Slavkov u Brna, Czech Republic. The site of Napoleon's victory over the combined Russian and Austrian armies in 1805.That dinner at the King’s Arms with his friends had been Henchard’s Austerlitz: he had had his successes since, but his course had not been upward. — 1886