Source : Webster's Revised Unabridged Dictionary (1913)

Terebratula \Ter`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}.