"Arth Fawr" meaning in Welsh

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "yr",
        "3": "arth",
        "4": "mawr",
        "t1": "the",
        "t2": "bear",
        "t3": "big, great"
      },
      "expansion": "yr (“the”) + arth (“bear”) + mawr (“big, great”)",
      "name": "compound"
    }
  ],
  "etymology_text": "From yr (“the”) + arth (“bear”) + mawr (“big, great”), \"the great bear\".",
  "forms": [
    {
      "form": "yr Arth Fawr",
      "tags": [
        "canonical",
        "feminine"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "head": "yr Arth Fawr"
      },
      "expansion": "yr Arth Fawr f",
      "name": "cy-proper noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "cy",
          "name": "Constellations",
          "orig": "cy:Constellations",
          "parents": [
            "Astronomy",
            "Sciences",
            "Space",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Ursa Major, the Great Bear"
      ],
      "id": "en-Arth_Fawr-cy-name-uroJUoXg",
      "links": [
        [
          "Ursa Major",
          "Ursa Major"
        ],
        [
          "Great Bear",
          "Great Bear"
        ]
      ],
      "related": [
        {
          "english": "Ursa Minor, the Little Bear",
          "word": "Arth Fach"
        }
      ],
      "synonyms": [
        {
          "word": "Arad"
        },
        {
          "word": "Arth Fwyaf"
        },
        {
          "word": "Haeddel"
        },
        {
          "word": "Haeddel Fawr"
        },
        {
          "word": "Jac a'i Wagen"
        },
        {
          "word": "Llong Foel"
        },
        {
          "word": "Llong Noa"
        },
        {
          "word": "Llun y Llong"
        },
        {
          "word": "Llun yr Haeddel"
        },
        {
          "word": "Men Siarl"
        },
        {
          "word": "Men Siarlmaen"
        },
        {
          "word": "Men Siarlys"
        },
        {
          "word": "Saith Seren"
        },
        {
          "word": "Sêr Llong"
        },
        {
          "word": "Sosban"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌarθ ˈvau̯r/"
    }
  ],
  "word": "Arth Fawr"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "yr",
        "3": "arth",
        "4": "mawr",
        "t1": "the",
        "t2": "bear",
        "t3": "big, great"
      },
      "expansion": "yr (“the”) + arth (“bear”) + mawr (“big, great”)",
      "name": "compound"
    }
  ],
  "etymology_text": "From yr (“the”) + arth (“bear”) + mawr (“big, great”), \"the great bear\".",
  "forms": [
    {
      "form": "yr Arth Fawr",
      "tags": [
        "canonical",
        "feminine"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "head": "yr Arth Fawr"
      },
      "expansion": "yr Arth Fawr f",
      "name": "cy-proper noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "name",
  "related": [
    {
      "english": "Ursa Minor, the Little Bear",
      "word": "Arth Fach"
    }
  ],
  "senses": [
    {
      "categories": [
        "Welsh compound terms",
        "Welsh entries with incorrect language header",
        "Welsh feminine nouns",
        "Welsh lemmas",
        "Welsh multiword terms",
        "Welsh proper nouns",
        "Welsh terms with IPA pronunciation",
        "cy:Constellations"
      ],
      "glosses": [
        "Ursa Major, the Great Bear"
      ],
      "links": [
        [
          "Ursa Major",
          "Ursa Major"
        ],
        [
          "Great Bear",
          "Great Bear"
        ]
      ],
      "synonyms": [
        {
          "word": "Arad"
        },
        {
          "word": "Arth Fwyaf"
        },
        {
          "word": "Haeddel"
        },
        {
          "word": "Haeddel Fawr"
        },
        {
          "word": "Jac a'i Wagen"
        },
        {
          "word": "Llong Foel"
        },
        {
          "word": "Llong Noa"
        },
        {
          "word": "Llun y Llong"
        },
        {
          "word": "Llun yr Haeddel"
        },
        {
          "word": "Men Siarl"
        },
        {
          "word": "Men Siarlmaen"
        },
        {
          "word": "Men Siarlys"
        },
        {
          "word": "Saith Seren"
        },
        {
          "word": "Sêr Llong"
        },
        {
          "word": "Sosban"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌarθ ˈvau̯r/"
    }
  ],
  "word": "Arth Fawr"
}