lime made by burning the shells of shellfish

Any of the Pinnidae, a family of large saltwater clams.

Alternative form of backshell

A short jacket reaching the hips, once part of military uniforms. / The jacket of a shell suit.

Synonym of Dyson sphere

Any of a number of bivalve molluscs in the family Anomiidae with thin and translucent shells.

An East Asian plant related to ginger, Alpinia zerumbet, grown for its showy flowers, which are shell-pink on the outside and intensely orange and red on the inside.

(astronomy) A rapidly-rotating star that has an equatorial circumstellar disc of gas

A company that engages in no substantive business activities, but instead exists as a vehicle for legal or financial transactions, typically to shield another party from liability or other issues.

(computer security, Internet) A shell-like interface for issuing commands to a compromised server.