"brb" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Argot Internet en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Interjections en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Palindromes en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Sigles en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "(Sigle) Initiales de [I’ll] be right back (« [je] reviens tout de suite »)."
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "intj",
  "pos_title": "Interjection",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Argot Internet en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Exemples en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Langage SMS en anglais",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "I’m going to the bank, brb.",
          "translation": "Je vais à la banque, je reviens tout de suite."
        }
      ],
      "glosses": [
        "Employé principalement dans les forums de messagerie instantanée ou clavardage pour indiquer que l’on s’absente temporairement."
      ],
      "id": "fr-brb-en-intj-gcWlulWR",
      "tags": [
        "slang"
      ],
      "topics": [
        "Internet",
        "SMS"
      ]
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "brb"
}

{
  "categories": [
    "Argot Internet en anglais",
    "Interjections en anglais",
    "Lemmes en anglais",
    "Palindromes en anglais",
    "Sigles en anglais",
    "anglais"
  ],
  "etymology_texts": [
    "(Sigle) Initiales de [I’ll] be right back (« [je] reviens tout de suite »)."
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "intj",
  "pos_title": "Interjection",
  "senses": [
    {
      "categories": [
        "Argot Internet en anglais",
        "Exemples en anglais",
        "Langage SMS en anglais"
      ],
      "examples": [
        {
          "text": "I’m going to the bank, brb.",
          "translation": "Je vais à la banque, je reviens tout de suite."
        }
      ],
      "glosses": [
        "Employé principalement dans les forums de messagerie instantanée ou clavardage pour indiquer que l’on s’absente temporairement."
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "Internet",
        "SMS"
      ]
    }
  ],
  "tags": [
    "invariable"
  ],
  "word": "brb"
}