"nút" meaning in Vietnamien

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms communs en vietnamien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Vietnamien",
      "orig": "vietnamien",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Vietnamien",
  "lang_code": "vi",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Bouton (d’une machine)."
      ],
      "id": "fr-nút-vi-noun-9FXC25z3"
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en vietnamien de l’informatique",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Bouton (dans une interface graphique)."
      ],
      "id": "fr-nút-vi-noun-mJEYy2ky",
      "topics": [
        "computing"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Vietnamien du Sud",
          "orig": "vietnamien du Sud",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Bouton (d’un vêtement)."
      ],
      "id": "fr-nút-vi-noun-MeDxXEm1",
      "raw_tags": [
        "Sud du Viêt Nam"
      ]
    }
  ],
  "synonyms": [
    {
      "raw_tags": [
        "Nord du Viêt Nam"
      ],
      "sense": "bouton d’un vêtement",
      "word": "cúc"
    }
  ],
  "word": "nút"
}

{
  "categories": [
    "Noms communs en vietnamien",
    "vietnamien"
  ],
  "lang": "Vietnamien",
  "lang_code": "vi",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Bouton (d’une machine)."
      ]
    },
    {
      "categories": [
        "Lexique en vietnamien de l’informatique"
      ],
      "glosses": [
        "Bouton (dans une interface graphique)."
      ],
      "topics": [
        "computing"
      ]
    },
    {
      "categories": [
        "vietnamien du Sud"
      ],
      "glosses": [
        "Bouton (d’un vêtement)."
      ],
      "raw_tags": [
        "Sud du Viêt Nam"
      ]
    }
  ],
  "synonyms": [
    {
      "raw_tags": [
        "Nord du Viêt Nam"
      ],
      "sense": "bouton d’un vêtement",
      "word": "cúc"
    }
  ],
  "word": "nút"
}