Shell

carapace

(conjoined scutes that comprise the "shell" of a tortoise or turtle)

carcasă

(any hollow structure; framework, or exterior structure)

coajă

(hard covering of an egg)

coajă

(covering of a nut)

cochilie

(hard calcareous or chitinous external covering of many invertebrates)

exoschelet

(entomology: exoskeleton of certain insects)

obuz

(hollow usually spherical or cylindrical projectile fired from a mortar or a cannon)

scoică

(hard calcareous or chitinous external covering of many invertebrates)