"circle-A" meaning in English

{
  "etymology_text": "An overstruck 'A' and 'O' (whether the 'A' is enclosed in the 'O' or extends beyond it). The symbol is an acronym of the slogan \"Anarchy is Order\", coined by French anarchist Pierre-Joseph Proudhon. It is now commonly interpreted as an 'A' in a circle.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "circle-A",
      "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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Anarchism",
          "orig": "en:Anarchism",
          "parents": [
            "Ideologies",
            "Leftism",
            "Politics",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Ⓐ; The symbol of anarchism"
      ],
      "id": "en-circle-A-en-noun-FDsqYUSe",
      "links": [
        [
          "Ⓐ",
          "Ⓐ"
        ],
        [
          "anarchism",
          "anarchism"
        ]
      ]
    }
  ],
  "word": "circle-A"
}

{
  "etymology_text": "An overstruck 'A' and 'O' (whether the 'A' is enclosed in the 'O' or extends beyond it). The symbol is an acronym of the slogan \"Anarchy is Order\", coined by French anarchist Pierre-Joseph Proudhon. It is now commonly interpreted as an 'A' in a circle.",
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "circle-A",
      "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 nouns with unknown or uncertain plurals",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Anarchism"
      ],
      "glosses": [
        "Ⓐ; The symbol of anarchism"
      ],
      "links": [
        [
          "Ⓐ",
          "Ⓐ"
        ],
        [
          "anarchism",
          "anarchism"
        ]
      ]
    }
  ],
  "word": "circle-A"
}