"fly cutter" meaning in English

{
  "forms": [
    {
      "form": "fly cutters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "fly cutter (plural fly cutters)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Tools",
          "orig": "en:Tools",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A rotating milling tool with a body into which tool bits are inserted, used to take broad, shallow facing cuts."
      ],
      "id": "en-fly_cutter-en-noun-6FvwfbQV"
    }
  ],
  "word": "fly cutter"
}

{
  "forms": [
    {
      "form": "fly cutters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "fly cutter (plural fly cutters)",
      "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",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Tools"
      ],
      "glosses": [
        "A rotating milling tool with a body into which tool bits are inserted, used to take broad, shallow facing cuts."
      ]
    }
  ],
  "word": "fly cutter"
}