Austerlitz, Battle ofPronunciation: /ˈaʊstəlɪts, ˈɔːstə-/Definition of Austerlitz, Battle of a battle in 1805 near the town of Austerlitz (now in the Czech Republic), in which Napoleon defeated the Austrians and Russians. Austerlitz, Battle of in other Oxford dictionaries Definition of Austerlitz, Battle of in the US English dictionary