jean
/dʒiːn/noun
mass noun
1- heavy twilled cotton cloth, especially denim粗斜纹棉布; 牛仔布：
as modifier a jean jacket.牛仔短上衣。
1.1
- count noun(in commercial use) a pair of jeans（商用）牛仔裤：
a button-fly jean.
暗纽式牛仔裤。
词源
late 15th cent. (as an adjective)： from Old French Janne （now Gênes）, from medieval Latin Janua 'Genoa', the place of original production. The noun sense comes from jean fustian, literally 'fustian from Genoa', used in the 16th cent. to denote a heavy twilled cotton cloth.