"grx" meaning in Spanish

{
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "interjection"
      },
      "expansion": "grx",
      "name": "head"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1999 April 12, Anaicite Wiche, “bueno dias”, in chile.rec.irc (Usenet)",
          "roman": "thx for the ride on saturday",
          "text": "grx por el paseo del sabado =)",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "word": "gracias"
        }
      ],
      "glosses": [
        "Informal form of gracias."
      ],
      "id": "en-grx-es-intj-6lV1L0RP",
      "links": [
        [
          "text messaging",
          "text messaging"
        ],
        [
          "Internet",
          "Internet"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "gracias",
          "gracias#Spanish"
        ]
      ],
      "raw_glosses": [
        "(text messaging, informal, Internet slang) Informal form of gracias."
      ],
      "tags": [
        "Internet",
        "form-of",
        "informal"
      ]
    }
  ],
  "word": "grx"
}

{
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "interjection"
      },
      "expansion": "grx",
      "name": "head"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "Spanish entries with incorrect language header",
        "Spanish informal forms",
        "Spanish informal terms",
        "Spanish interjections",
        "Spanish internet slang",
        "Spanish lemmas",
        "Spanish terms with quotations",
        "Spanish text messaging slang"
      ],
      "examples": [
        {
          "ref": "1999 April 12, Anaicite Wiche, “bueno dias”, in chile.rec.irc (Usenet)",
          "roman": "thx for the ride on saturday",
          "text": "grx por el paseo del sabado =)",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "word": "gracias"
        }
      ],
      "glosses": [
        "Informal form of gracias."
      ],
      "links": [
        [
          "text messaging",
          "text messaging"
        ],
        [
          "Internet",
          "Internet"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "gracias",
          "gracias#Spanish"
        ]
      ],
      "raw_glosses": [
        "(text messaging, informal, Internet slang) Informal form of gracias."
      ],
      "tags": [
        "Internet",
        "form-of",
        "informal"
      ]
    }
  ],
  "word": "grx"
}