"pectoral muscle" meaning in English

{
  "forms": [
    {
      "form": "pectoral muscles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "pectoral muscle (plural pectoral muscles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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        {
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          "name": "Terms with Maori translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Muscles",
          "orig": "en:Muscles",
          "parents": [
            "Body parts",
            "Body",
            "Anatomy",
            "All topics",
            "Biology",
            "Medicine",
            "Fundamental",
            "Sciences",
            "Healthcare",
            "Health"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Each of the four large paired muscles covering the front of the rib cage and serve to draw the forelimbs toward the chest."
      ],
      "id": "en-pectoral_muscle-en-noun-h3IhZj8t",
      "synonyms": [
        {
          "word": "pec"
        }
      ],
      "translations": [
        {
          "code": "jra",
          "lang": "Jarai",
          "sense": "Muscle covering front of ribcage",
          "word": "lưk"
        },
        {
          "code": "mi",
          "lang": "Maori",
          "sense": "Muscle covering front of ribcage",
          "word": "uarei"
        }
      ]
    }
  ],
  "word": "pectoral muscle"
}

{
  "forms": [
    {
      "form": "pectoral muscles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "pectoral muscle (plural pectoral muscles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
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        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
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        "en:Muscles"
      ],
      "glosses": [
        "Each of the four large paired muscles covering the front of the rib cage and serve to draw the forelimbs toward the chest."
      ],
      "synonyms": [
        {
          "word": "pec"
        }
      ]
    }
  ],
  "translations": [
    {
      "code": "jra",
      "lang": "Jarai",
      "sense": "Muscle covering front of ribcage",
      "word": "lưk"
    },
    {
      "code": "mi",
      "lang": "Maori",
      "sense": "Muscle covering front of ribcage",
      "word": "uarei"
    }
  ],
  "word": "pectoral muscle"
}