"mactra" meaning in English

{
  "etymology_text": "From the genus name.",
  "forms": [
    {
      "form": "mactras",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mactra (plural mactras)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Venerida order mollusks",
          "orig": "en:Venerida order mollusks",
          "parents": [
            "Bivalves",
            "Mollusks",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Any marine bivalve shell of the numerous known species of genus Mactra and allied genera, some of which are used as food, for example the European clam Mactra stultorum."
      ],
      "id": "en-mactra-en-noun-hJPlJYvB",
      "links": [
        [
          "bivalve",
          "bivalve"
        ],
        [
          "genus",
          "genus"
        ],
        [
          "Mactra",
          "Mactra#Translingual"
        ],
        [
          "food",
          "food"
        ]
      ],
      "synonyms": [
        {
          "word": "trough shell"
        },
        {
          "word": "duck clam"
        },
        {
          "word": "surf clam"
        }
      ],
      "wikipedia": [
        "Mactra"
      ]
    }
  ],
  "word": "mactra"
}

{
  "etymology_text": "From the genus name.",
  "forms": [
    {
      "form": "mactras",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mactra (plural mactras)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "Entries using missing taxonomic name (species)",
        "Pages with 2 entries",
        "Pages with entries",
        "en:Venerida order mollusks"
      ],
      "glosses": [
        "Any marine bivalve shell of the numerous known species of genus Mactra and allied genera, some of which are used as food, for example the European clam Mactra stultorum."
      ],
      "links": [
        [
          "bivalve",
          "bivalve"
        ],
        [
          "genus",
          "genus"
        ],
        [
          "Mactra",
          "Mactra#Translingual"
        ],
        [
          "food",
          "food"
        ]
      ],
      "wikipedia": [
        "Mactra"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "trough shell"
    },
    {
      "word": "duck clam"
    },
    {
      "word": "surf clam"
    }
  ],
  "word": "mactra"
}