Shell

buc

(any hollow structure; framework, or exterior structure)

closca

(hard calcareous or chitinous external covering of many invertebrates)

closca

(hard covering of an egg)

closca

(entomology: exoskeleton of certain insects)

closca

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

clovella

(hard covering of an egg)

clovella

(covering of a nut)

clovella

(husks of cacao seeds)

conquilla

(hard calcareous or chitinous external covering of many invertebrates)

consola

(computing: general-purpose environment)

conxa

(hard calcareous or chitinous external covering of many invertebrates)

obús

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

terminal

(computing: general-purpose environment)