(malacology) A marine univalve shell of the genus Bulla and certain shells of similar appearance of the now disused order Tectibranchiata of molluscs.

plural of tongue-shell

Any species of the brachipod genus Lingula.

(business) A legal entity that demonstrably has no liabilities.

plural of star shell

(military) A type of ammunition shell which bursts to release a shower of stars for illuminating enemy positions etc.

plural of rice shell

Any of numerous species of small white polished marine shells of the genus Olivella.

plural of ark shell

(malacology) Any of the family Arcidae of saltwater clams or marine bivalve molluscs.