Akademik

cavalry twill
noun
: a sturdy suiting usually woolen or worsted but sometimes cotton or rayon, woven of tightly twisted yarns in a steep double twill, and similar to elastique but with a coarser raised cord effect

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ˌcavalry ˈtwill 7 [cavalry twill] noun uncountable
a strong cloth made of wool, used for making trousers/pants and clothes for sports

Useful english dictionary. 2012.