Carapace
CARAPACE (a Fr. word, from the Span, carapacho, a shield or armour), the upper shell of a crustacean, tortoise or turtle. The covering of the armadillo is called a carapace, as is also the hard case in which certain of the Infusoria are enclosed.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)