"chính thất" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "正室"
      },
      "expansion": "",
      "name": "etymid"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "正",
        "2": "main",
        "3": "室",
        "4": "wife"
      },
      "expansion": "Sino-Vietnamese word from 正室, composed of 正 (“main”) and 室 (“wife”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 正室, composed of 正 (“main”) and 室 (“wife”).",
  "forms": [
    {
      "form": "chánh thất",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "chính thất",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "chính thất",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Sino-Vietnamese words",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "vi",
          "name": "Female",
          "orig": "vi:Female",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "vi",
          "name": "Marriage",
          "orig": "vi:Marriage",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "legal wife; first wife (as opposed to a concubine)"
      ],
      "id": "en-chính_thất-vi-noun-4TFZTNgD",
      "links": [
        [
          "legal",
          "legal#English"
        ],
        [
          "wife",
          "wife#English"
        ],
        [
          "first",
          "first#English"
        ],
        [
          "concubine",
          "concubine#English"
        ]
      ],
      "raw_glosses": [
        "(historical) legal wife; first wife (as opposed to a concubine)"
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[t͡ɕïŋ˧˦ tʰət̚˧˦]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[t͡ɕɨn˦˧˥ tʰək̚˦˧˥]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[cɨn˦˥ tʰək̚˦˥]",
      "note": "Saigon"
    }
  ],
  "word": "chính thất"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "正室"
      },
      "expansion": "",
      "name": "etymid"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "正",
        "2": "main",
        "3": "室",
        "4": "wife"
      },
      "expansion": "Sino-Vietnamese word from 正室, composed of 正 (“main”) and 室 (“wife”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 正室, composed of 正 (“main”) and 室 (“wife”).",
  "forms": [
    {
      "form": "chánh thất",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "chính thất",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "chính thất",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Sino-Vietnamese words",
        "Vietnamese entries with incorrect language header",
        "Vietnamese lemmas",
        "Vietnamese nouns",
        "Vietnamese terms with IPA pronunciation",
        "Vietnamese terms with historical senses",
        "vi:Female",
        "vi:Marriage"
      ],
      "glosses": [
        "legal wife; first wife (as opposed to a concubine)"
      ],
      "links": [
        [
          "legal",
          "legal#English"
        ],
        [
          "wife",
          "wife#English"
        ],
        [
          "first",
          "first#English"
        ],
        [
          "concubine",
          "concubine#English"
        ]
      ],
      "raw_glosses": [
        "(historical) legal wife; first wife (as opposed to a concubine)"
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[t͡ɕïŋ˧˦ tʰət̚˧˦]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[t͡ɕɨn˦˧˥ tʰək̚˦˧˥]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[cɨn˦˥ tʰək̚˦˥]",
      "note": "Saigon"
    }
  ],
  "word": "chính thất"
}