"tag question" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions nominales en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de tag et de question."
  ],
  "forms": [
    {
      "form": "tag questions",
      "ipas": [
        "\\ˈtæg ˌkwɛs.tʃənz\\"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en anglais de la grammaire",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Question-tag. En anglais, on utilise isn’t it, aren’t you, etc. selon le sujet et le verbe de la phrase à laquelle la question-tag est attachée."
      ],
      "id": "fr-tag_question-en-noun-X~9gyx5z",
      "topics": [
        "grammar"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈtæɡ ˌkwɛs.tʃən\\"
    }
  ],
  "word": "tag question"
}

{
  "categories": [
    "Compositions en anglais",
    "Locutions nominales en anglais",
    "anglais"
  ],
  "etymology_texts": [
    "Composé de tag et de question."
  ],
  "forms": [
    {
      "form": "tag questions",
      "ipas": [
        "\\ˈtæg ˌkwɛs.tʃənz\\"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Lexique en anglais de la grammaire"
      ],
      "glosses": [
        "Question-tag. En anglais, on utilise isn’t it, aren’t you, etc. selon le sujet et le verbe de la phrase à laquelle la question-tag est attachée."
      ],
      "topics": [
        "grammar"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈtæɡ ˌkwɛs.tʃən\\"
    }
  ],
  "word": "tag question"
}