"mateín" meaning in Spanish

{
  "forms": [
    {
      "form": "mateina",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "mateines",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "mateinas",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mateín (feminine mateina, masculine plural mateines, feminine plural mateinas)",
      "name": "es-adj"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "of the San Mateo festival in Oviedo"
      ],
      "id": "en-mateín-es-adj-yuQdLo~e",
      "raw_glosses": [
        "(relational) of the San Mateo festival in Oviedo"
      ],
      "tags": [
        "relational"
      ]
    }
  ],
  "word": "mateín"
}

{
  "forms": [
    {
      "form": "mateina",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "mateines",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "mateinas",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mateín (feminine mateina, masculine plural mateines, feminine plural mateinas)",
      "name": "es-adj"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Spanish adjectives",
        "Spanish entries with incorrect language header",
        "Spanish lemmas",
        "Spanish relational adjectives"
      ],
      "glosses": [
        "of the San Mateo festival in Oviedo"
      ],
      "raw_glosses": [
        "(relational) of the San Mateo festival in Oviedo"
      ],
      "tags": [
        "relational"
      ]
    }
  ],
  "word": "mateín"
}