"thrash metaller" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "thrash metal",
        "3": "er"
      },
      "expansion": "thrash metal + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From thrash metal + -er.",
  "forms": [
    {
      "form": "thrash metallers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "thrash metaller (plural thrash metallers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "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 terms suffixed with -er",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Fans (people)",
          "orig": "en:Fans (people)",
          "parents": [
            "Fandom",
            "People",
            "Culture",
            "Human",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A fan or performer of thrash metal."
      ],
      "id": "en-thrash_metaller-en-noun-dctjtIeH",
      "links": [
        [
          "thrash metal",
          "thrash metal#English"
        ]
      ]
    }
  ],
  "word": "thrash metaller"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "thrash metal",
        "3": "er"
      },
      "expansion": "thrash metal + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From thrash metal + -er.",
  "forms": [
    {
      "form": "thrash metallers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "thrash metaller (plural thrash metallers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms suffixed with -er",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Fans (people)"
      ],
      "glosses": [
        "A fan or performer of thrash metal."
      ],
      "links": [
        [
          "thrash metal",
          "thrash metal#English"
        ]
      ]
    }
  ],
  "word": "thrash metaller"
}