Word Study
mactra
CIDE DICTIONARY
mactra, n. [NL., fr. Gr. kneading trough, fr. to knead.].
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. [1913 Webster]
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