"volant piece" meaning in English

{
  "forms": [
    {
      "form": "volant pieces",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "volant piece (plural volant pieces)",
      "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 entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Armor",
          "orig": "en:Armor",
          "parents": [
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An adjustable piece of armour for guarding the throat, etc. during jousting."
      ],
      "id": "en-volant_piece-en-noun-O5PPIl1c",
      "links": [
        [
          "adjustable",
          "adjustable"
        ],
        [
          "armour",
          "armour"
        ],
        [
          "joust",
          "joust"
        ]
      ],
      "raw_glosses": [
        "(historical) An adjustable piece of armour for guarding the throat, etc. during jousting."
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "volant piece"
}

{
  "forms": [
    {
      "form": "volant pieces",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "volant piece (plural volant pieces)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with historical senses",
        "English terms with non-redundant non-automated sortkeys",
        "en:Armor"
      ],
      "glosses": [
        "An adjustable piece of armour for guarding the throat, etc. during jousting."
      ],
      "links": [
        [
          "adjustable",
          "adjustable"
        ],
        [
          "armour",
          "armour"
        ],
        [
          "joust",
          "joust"
        ]
      ],
      "raw_glosses": [
        "(historical) An adjustable piece of armour for guarding the throat, etc. during jousting."
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "volant piece"
}