Definitions for: Mactra

Webster (1913) Definition: Mac"tra, n. [NL., fr. Gr. ? kneading trough, fr. ? to
knead.] (Zo["o]l.)
Any marine bivalve shell of the genus Mactra, and allied
genera. Many species are known. Some of them are used as
food, as Mactra stultorum, of Europe. See Surf clam,
under Surf.