mass noun
1- the tough outer layer of something, in particular外皮, 尤指：
1.1
- the tough outer skin of certain fruit, especially citrus fruit（尤指柑橘属果实的）果皮。
1.2
- the hard outer edge of cheese or bacon, usually removed before eating干酪（或熏猪肉）外层硬皮。
1.3
- the bark of a tree or plant树皮; 植物外皮。
1.4
- the hard outer layer of a rhizomorph or other part of a fungus根状菌索（或真菌其他部分）外层硬皮。
1.5
- the skin or blubber of a whale鲸皮; 鲸脂。
派生词
rinded
adjective黄皮柠檬
rindless
adjective词源
Old English rind（e） 'bark of a tree'; related to Dutch run and German Rinde, of unknown origin.