"primeiro grau" meaning in Portuguese

{
  "etymology_text": "Literally \"first degree\".",
  "forms": [
    {
      "form": "primeiros graus",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "primeiro grau m (plural primeiros graus)",
      "name": "pt-noun"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Brazilian Portuguese",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "pt",
          "name": "Education",
          "orig": "pt:Education",
          "parents": [
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "96 4",
          "kind": "other",
          "name": "Portuguese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "the education stage equivalent to elementary and junior high"
      ],
      "id": "en-primeiro_grau-pt-noun-32TWk-Cj",
      "links": [
        [
          "education",
          "education"
        ],
        [
          "elementary",
          "elementary school"
        ],
        [
          "junior high",
          "junior high school"
        ]
      ],
      "raw_glosses": [
        "(Brazil, education, dated) the education stage equivalent to elementary and junior high"
      ],
      "synonyms": [
        {
          "word": "ginásio"
        },
        {
          "word": "ensino fundamental"
        }
      ],
      "tags": [
        "Brazil",
        "dated",
        "masculine"
      ],
      "topics": [
        "education"
      ]
    },
    {
      "coordinate_terms": [
        {
          "_dis1": "0 100",
          "word": "segundo grau"
        },
        {
          "_dis1": "0 100",
          "word": "terceiro grau"
        }
      ],
      "glosses": [
        "Used other than figuratively or idiomatically: see primeiro, grau."
      ],
      "id": "en-primeiro_grau-pt-noun-f0VxDp6G",
      "links": [
        [
          "primeiro",
          "primeiro#Portuguese"
        ],
        [
          "grau",
          "grau#Portuguese"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "primeiro grau"
}

{
  "categories": [
    "Portuguese countable nouns",
    "Portuguese entries with incorrect language header",
    "Portuguese lemmas",
    "Portuguese masculine nouns",
    "Portuguese multiword terms",
    "Portuguese nouns",
    "Portuguese nouns with red links in their headword lines"
  ],
  "coordinate_terms": [
    {
      "word": "segundo grau"
    },
    {
      "word": "terceiro grau"
    }
  ],
  "etymology_text": "Literally \"first degree\".",
  "forms": [
    {
      "form": "primeiros graus",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "primeiro grau m (plural primeiros graus)",
      "name": "pt-noun"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Brazilian Portuguese",
        "Portuguese dated terms",
        "pt:Education"
      ],
      "glosses": [
        "the education stage equivalent to elementary and junior high"
      ],
      "links": [
        [
          "education",
          "education"
        ],
        [
          "elementary",
          "elementary school"
        ],
        [
          "junior high",
          "junior high school"
        ]
      ],
      "raw_glosses": [
        "(Brazil, education, dated) the education stage equivalent to elementary and junior high"
      ],
      "synonyms": [
        {
          "word": "ginásio"
        },
        {
          "word": "ensino fundamental"
        }
      ],
      "tags": [
        "Brazil",
        "dated",
        "masculine"
      ],
      "topics": [
        "education"
      ]
    },
    {
      "glosses": [
        "Used other than figuratively or idiomatically: see primeiro, grau."
      ],
      "links": [
        [
          "primeiro",
          "primeiro#Portuguese"
        ],
        [
          "grau",
          "grau#Portuguese"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "primeiro grau"
}