TerebratulaTer`e*brat"u*la\, n.; pl. Terebratul[ae]. [Nl., dim. fr. terebratus, p. p., perforated.] (Zo["o]l.) A genus of brachiopods which includes many living and some fossil species. The larger valve has a perforated beak, through which projects a short peduncle for attachment. Called also lamp shell.