n. 蜕皮, 脱落物, 脱壳

[医] 上皮脱落, 乳牙脱落

Exuviation \Ex*u`vi*a"tion\, n. (Zo["o]l.)
The rejecting or casting off of some part, more particularly,
the outer cuticular layer, as the shells of crustaceans,
skins of snakes, etc.; molting; ecdysis.