wapiti

[wop-i-tee] /ˈwɒp ɪ ti/
noun, plural wapitis (especially collectively) wapiti.
1.
elk (def 2).
Origin
1806, Americanism; < Shawnee wa·piti literally, white rump (equivalent to Proto-Algonquian *wa·p- white + *-etwiy- rump); introduced as an E word by U.S. physician and naturalist Benjamin S. Barton
British Dictionary definitions for wapiti

wapiti

/ˈwɒpɪtɪ/
noun (pl) -tis
1.
a large deer, Cervus canadensis, with large much-branched antlers, native to North America and now also common in the South Island of New Zealand Also called American elk
Word Origin
C19: from Shawnee, literally: white deer, from wap (unattested) white; from the animal's white tail and rump