"greathelm" meaning in English

{
  "forms": [
    {
      "form": "greathelms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "greathelm (plural greathelms)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "great helm"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2015, Tim Hall, Shadow of the Wolf, Scholastic Inc.",
          "text": "Robin gripped his shield and his greathelm, and he waited with the other squires on the display ground. Around them the murmur of the crowd continued to swell.",
          "type": "quotation"
        },
        {
          "ref": "2017, Ken Mondschein, Game of Thrones and the Medieval Art of War, McFarland",
          "text": "At first, they would wear a metal cap and mail coif under a larger greathelm, but later helmets such as bascinets had removable visors.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of great helm"
      ],
      "id": "en-greathelm-en-noun-m~p6V6BQ",
      "links": [
        [
          "great helm",
          "great helm#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "greathelm"
}

{
  "forms": [
    {
      "form": "greathelms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "greathelm (plural greathelms)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "great helm"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2015, Tim Hall, Shadow of the Wolf, Scholastic Inc.",
          "text": "Robin gripped his shield and his greathelm, and he waited with the other squires on the display ground. Around them the murmur of the crowd continued to swell.",
          "type": "quotation"
        },
        {
          "ref": "2017, Ken Mondschein, Game of Thrones and the Medieval Art of War, McFarland",
          "text": "At first, they would wear a metal cap and mail coif under a larger greathelm, but later helmets such as bascinets had removable visors.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of great helm"
      ],
      "links": [
        [
          "great helm",
          "great helm#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "greathelm"
}