"sylffwr" meaning in Welsh

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "en",
        "3": "sulphur"
      },
      "expansion": "English sulphur",
      "name": "bor"
    },
    {
      "args": {
        "1": "cy",
        "2": "xno",
        "3": "sulfre"
      },
      "expansion": "Anglo-Norman sulfre",
      "name": "der"
    },
    {
      "args": {
        "1": "cy",
        "2": "la",
        "3": "sulfur"
      },
      "expansion": "Latin sulfur",
      "name": "der"
    },
    {
      "args": {
        "1": "la",
        "2": "sulpur"
      },
      "expansion": "sulpur",
      "name": "m"
    }
  ],
  "etymology_text": "Borrowed from English sulphur, from Anglo-Norman sulfre, from Latin sulfur, from sulpur itself of uncertain origin.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-"
      },
      "expansion": "sylffwr m (uncountable, 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"
        },
        {
          "kind": "topical",
          "langcode": "cy",
          "name": "Chemical elements",
          "orig": "cy:Chemical elements",
          "parents": [
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "cy",
          "name": "Sulfur",
          "orig": "cy:Sulfur",
          "parents": [
            "Chalcogens",
            "Chemical elements",
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "sulfur"
      ],
      "id": "en-sylffwr-cy-noun-fm2jOuxm",
      "links": [
        [
          "sulfur",
          "sulfur"
        ]
      ],
      "synonyms": [
        {
          "word": "brwmstan"
        },
        {
          "word": "llosgfaen"
        },
        {
          "word": "llosglist"
        },
        {
          "word": "mygfaen"
        }
      ],
      "tags": [
        "masculine",
        "not-mutable",
        "uncountable"
      ],
      "wikipedia": [
        "cy:sylffwr"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈsəlfʊr/"
    },
    {
      "rhymes": "-əlfʊr"
    }
  ],
  "word": "sylffwr"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "en",
        "3": "sulphur"
      },
      "expansion": "English sulphur",
      "name": "bor"
    },
    {
      "args": {
        "1": "cy",
        "2": "xno",
        "3": "sulfre"
      },
      "expansion": "Anglo-Norman sulfre",
      "name": "der"
    },
    {
      "args": {
        "1": "cy",
        "2": "la",
        "3": "sulfur"
      },
      "expansion": "Latin sulfur",
      "name": "der"
    },
    {
      "args": {
        "1": "la",
        "2": "sulpur"
      },
      "expansion": "sulpur",
      "name": "m"
    }
  ],
  "etymology_text": "Borrowed from English sulphur, from Anglo-Norman sulfre, from Latin sulfur, from sulpur itself of uncertain origin.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-"
      },
      "expansion": "sylffwr m (uncountable, not mutable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Rhymes:Welsh/əlfʊr",
        "Rhymes:Welsh/əlfʊr/2 syllables",
        "Welsh entries with incorrect language header",
        "Welsh lemmas",
        "Welsh masculine nouns",
        "Welsh non-mutable terms",
        "Welsh nouns",
        "Welsh terms borrowed from English",
        "Welsh terms derived from Anglo-Norman",
        "Welsh terms derived from English",
        "Welsh terms derived from Latin",
        "Welsh terms with IPA pronunciation",
        "Welsh uncountable nouns",
        "cy:Chemical elements",
        "cy:Sulfur"
      ],
      "glosses": [
        "sulfur"
      ],
      "links": [
        [
          "sulfur",
          "sulfur"
        ]
      ],
      "synonyms": [
        {
          "word": "brwmstan"
        },
        {
          "word": "llosgfaen"
        },
        {
          "word": "llosglist"
        },
        {
          "word": "mygfaen"
        }
      ],
      "tags": [
        "masculine",
        "not-mutable",
        "uncountable"
      ],
      "wikipedia": [
        "cy:sylffwr"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈsəlfʊr/"
    },
    {
      "rhymes": "-əlfʊr"
    }
  ],
  "word": "sylffwr"
}