"sien" meaning in French

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "la",
        "3": "suus"
      },
      "expansion": "Latin suus",
      "name": "inh"
    }
  ],
  "etymology_text": "Ultimately from Latin suus.",
  "forms": [
    {
      "form": "sienne",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "siens",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "siennes",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sien (feminine sienne, masculine plural siens, feminine plural siennes)",
      "name": "fr-adj"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "faire des siennes"
        },
        {
          "word": "faire sien"
        },
        {
          "english": "his, hers",
          "word": "le sien"
        },
        {
          "word": "y mettre du sien"
        }
      ],
      "glosses": [
        "his (that which belongs to him); her (that which belongs to her)"
      ],
      "id": "en-sien-fr-adj-IbDxd6sX",
      "links": [
        [
          "his",
          "his"
        ],
        [
          "her",
          "her"
        ]
      ],
      "raw_glosses": [
        "(archaic) his (that which belongs to him); her (that which belongs to her)"
      ],
      "related": [
        {
          "word": "son"
        },
        {
          "word": "sa"
        },
        {
          "word": "ses"
        }
      ],
      "tags": [
        "archaic"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sjɛ̃/"
    },
    {
      "audio": "Fr-sien.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/f4/Fr-sien.ogg/Fr-sien.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/f/f4/Fr-sien.ogg",
      "text": "audio"
    }
  ],
  "word": "sien"
}

{
  "derived": [
    {
      "word": "faire des siennes"
    },
    {
      "word": "faire sien"
    },
    {
      "english": "his, hers",
      "word": "le sien"
    },
    {
      "word": "y mettre du sien"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "la",
        "3": "suus"
      },
      "expansion": "Latin suus",
      "name": "inh"
    }
  ],
  "etymology_text": "Ultimately from Latin suus.",
  "forms": [
    {
      "form": "sienne",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "siens",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "siennes",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sien (feminine sienne, masculine plural siens, feminine plural siennes)",
      "name": "fr-adj"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "adj",
  "related": [
    {
      "word": "son"
    },
    {
      "word": "sa"
    },
    {
      "word": "ses"
    }
  ],
  "senses": [
    {
      "categories": [
        "French 1-syllable words",
        "French adjectives",
        "French entries with incorrect language header",
        "French lemmas",
        "French terms derived from Latin",
        "French terms inherited from Latin",
        "French terms with IPA pronunciation",
        "French terms with archaic senses",
        "French terms with audio links"
      ],
      "glosses": [
        "his (that which belongs to him); her (that which belongs to her)"
      ],
      "links": [
        [
          "his",
          "his"
        ],
        [
          "her",
          "her"
        ]
      ],
      "raw_glosses": [
        "(archaic) his (that which belongs to him); her (that which belongs to her)"
      ],
      "tags": [
        "archaic"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sjɛ̃/"
    },
    {
      "audio": "Fr-sien.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/f/f4/Fr-sien.ogg/Fr-sien.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/f/f4/Fr-sien.ogg",
      "text": "audio"
    }
  ],
  "word": "sien"
}