"sert" meaning in Tourangeau

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms communs en tourangeau",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Tourangeau",
      "orig": "tourangeau",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Tourangeau",
  "lang_code": "tourangeau",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en tourangeau",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Exemples en tourangeau à traduire",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Sens inconnu en tourangeau",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              18,
              22
            ]
          ],
          "text": "n’en faire que le sert"
        }
      ],
      "glosses": [
        "…"
      ],
      "id": "fr-sert-tourangeau-noun-tJNYlMjO",
      "raw_tags": [
        "Sens inconnu"
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "sert"
}

{
  "categories": [
    "Noms communs en tourangeau",
    "tourangeau"
  ],
  "lang": "Tourangeau",
  "lang_code": "tourangeau",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Exemples en tourangeau",
        "Exemples en tourangeau à traduire",
        "Sens inconnu en tourangeau"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              18,
              22
            ]
          ],
          "text": "n’en faire que le sert"
        }
      ],
      "glosses": [
        "…"
      ],
      "raw_tags": [
        "Sens inconnu"
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "sert"
}