Kos·ci·us·ko (kŏs'ē-ŭs'kō, kŏs'kē-) The highest mountain of Australia, in the southeast part of the country in the Australian Alps. It rises to 2,231.4 m (7,316 ft).
Kos·ci·us·ko (kŏs'ē-ŭs'kō, kŏs'kē-, kôsh-chŏŏsh'kō) Polish general and patriot who fought with the colonists in the American Revolution and was a leader in Poland's struggle for independence from Russia.