"sidan" meaning in Welsh

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "la",
        "3": "saeta",
        "4": "",
        "5": "bristle"
      },
      "expansion": "Latin saeta (“bristle”)",
      "name": "der"
    },
    {
      "args": {
        "1": "ga",
        "2": "síoda"
      },
      "expansion": "Irish síoda",
      "name": "cog"
    }
  ],
  "etymology_text": "Ultimately from Latin saeta (“bristle”); compare Irish síoda.",
  "forms": [
    {
      "form": "sidanau",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "sidanau"
      },
      "expansion": "sidan m (plural sidanau, not mutable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "english": "waxwing",
          "word": "cynffon sidan"
        },
        {
          "word": "papur sidan"
        },
        {
          "word": "pryf sidan"
        }
      ],
      "glosses": [
        "silk"
      ],
      "id": "en-sidan-cy-noun-8sgZtnkN",
      "links": [
        [
          "silk",
          "silk"
        ]
      ],
      "tags": [
        "masculine",
        "not-mutable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈsɪdan/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ˈsiːdan/",
      "tags": [
        "South-Wales"
      ]
    },
    {
      "ipa": "/ˈsɪdan/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "sidan"
}

{
  "derived": [
    {
      "english": "waxwing",
      "word": "cynffon sidan"
    },
    {
      "word": "papur sidan"
    },
    {
      "word": "pryf sidan"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "la",
        "3": "saeta",
        "4": "",
        "5": "bristle"
      },
      "expansion": "Latin saeta (“bristle”)",
      "name": "der"
    },
    {
      "args": {
        "1": "ga",
        "2": "síoda"
      },
      "expansion": "Irish síoda",
      "name": "cog"
    }
  ],
  "etymology_text": "Ultimately from Latin saeta (“bristle”); compare Irish síoda.",
  "forms": [
    {
      "form": "sidanau",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "sidanau"
      },
      "expansion": "sidan m (plural sidanau, not mutable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Welsh countable nouns",
        "Welsh entries with incorrect language header",
        "Welsh lemmas",
        "Welsh masculine nouns",
        "Welsh non-mutable terms",
        "Welsh nouns",
        "Welsh nouns with red links in their headword lines",
        "Welsh terms derived from Latin",
        "Welsh terms with IPA pronunciation"
      ],
      "glosses": [
        "silk"
      ],
      "links": [
        [
          "silk",
          "silk"
        ]
      ],
      "tags": [
        "masculine",
        "not-mutable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈsɪdan/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ˈsiːdan/",
      "tags": [
        "South-Wales"
      ]
    },
    {
      "ipa": "/ˈsɪdan/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "sidan"
}