English dictionary
mactra
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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Any marine bivalve shell of the genus <i>Mactra</i>, and allied genera. Many species are known. Some of them are used as food, as <i>Mactra stultorum</i>, of Europe. See <i>Surf clam</i>, under <u>Surf</u>.
Source: webster1913