Definition of carapace noun from the Oxford Advanced Learner's Dictionary

 

carapace

 noun
noun
BrE BrE//ˈkærəpeɪs//
 
; NAmE NAmE//ˈkærəpeɪs//
 
(specialist)
 
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the hard shell on the back of some animals such as crabs, that protects them Word Origin mid 19th cent.: from French, from Spanish carapacho, of unknown origin.
See the Oxford Advanced American Dictionary entry: carapace