"gr8" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "gr8",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English number homophones",
          "parents": [
            "Number homophones",
            "Rebuses",
            "Terms spelled with numbers",
            "Terms by etymology"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Great."
      ],
      "id": "en-gr8-en-adj-rRm4zC3r",
      "links": [
        [
          "Internet",
          "Internet"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "text messaging",
          "text messaging"
        ],
        [
          "Great",
          "great"
        ]
      ],
      "raw_glosses": [
        "(Internet slang, text messaging) Great."
      ],
      "synonyms": [
        {
          "word": "grt"
        }
      ],
      "tags": [
        "Internet"
      ]
    }
  ],
  "word": "gr8"
}

{
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "gr8",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English internet slang",
        "English lemmas",
        "English number homophones",
        "English terms spelled with numbers",
        "English text messaging slang",
        "English words without vowels",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Great."
      ],
      "links": [
        [
          "Internet",
          "Internet"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "text messaging",
          "text messaging"
        ],
        [
          "Great",
          "great"
        ]
      ],
      "raw_glosses": [
        "(Internet slang, text messaging) Great."
      ],
      "synonyms": [
        {
          "word": "grt"
        }
      ],
      "tags": [
        "Internet"
      ]
    }
  ],
  "word": "gr8"
}