exuviae
plural noun
ex·u·vi·ae ig-ˈzü-vē-ˌē 
-vē-ˌī
: sloughed off natural animal coverings (such as the skins of snakes)
exuvial
ig-ˈzü-vē-əl
adjective 
Word History
Etymology
Latin, from exuere to take off, from ex- + -uere to put on; akin to Old Church Slavonic obuti to put on (footwear)
First Known Use
1653, in the meaning defined above
Medical Definition
exuviae
noun plural
ex·u·vi·ae ig-ˈzü-vē-ˌē -vē-ˌī
-vē-ˌī : sloughed-off natural coverings of animals (as the skins of snakes)