"callestrai" meaning in Welsh

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "callestr",
        "3": "-ai",
        "gloss1": "flint"
      },
      "expansion": "callestr (“flint”) + -ai",
      "name": "af"
    },
    {
      "args": {
        "1": "cy",
        "2": "en",
        "3": "silicon",
        "nocap": "1"
      },
      "expansion": "calque of English silicon",
      "name": "calque"
    },
    {
      "args": {
        "1": "cy",
        "2": "NL.",
        "3": "silicium"
      },
      "expansion": "New Latin silicium",
      "name": "der"
    },
    {
      "args": {
        "1": "la",
        "2": "silex",
        "3": "",
        "4": "flint, silica"
      },
      "expansion": "Latin silex (“flint, silica”)",
      "name": "noncog"
    }
  ],
  "etymology_text": "From callestr (“flint”) + -ai, a calque of English silicon or New Latin silicium, from Latin silex (“flint, silica”).",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-"
      },
      "expansion": "callestrai m (uncountable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Welsh terms suffixed with -ai",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "cy",
          "name": "Obsolete chemical terminology",
          "orig": "cy:Obsolete chemical terminology",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "silicon"
      ],
      "id": "en-callestrai-cy-noun--nKHFczq",
      "links": [
        [
          "silicon",
          "silicon"
        ]
      ],
      "raw_glosses": [
        "(obsolete) silicon"
      ],
      "related": [
        {
          "english": "nitrogen",
          "word": "blorai"
        },
        {
          "english": "oxygen",
          "word": "ufelai"
        },
        {
          "english": "hydrogen",
          "word": "ulai"
        }
      ],
      "synonyms": [
        {
          "word": "silicon"
        }
      ],
      "tags": [
        "masculine",
        "obsolete",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/kaˈɬɛsdrai̯/",
      "note": "cy"
    }
  ],
  "word": "callestrai"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "callestr",
        "3": "-ai",
        "gloss1": "flint"
      },
      "expansion": "callestr (“flint”) + -ai",
      "name": "af"
    },
    {
      "args": {
        "1": "cy",
        "2": "en",
        "3": "silicon",
        "nocap": "1"
      },
      "expansion": "calque of English silicon",
      "name": "calque"
    },
    {
      "args": {
        "1": "cy",
        "2": "NL.",
        "3": "silicium"
      },
      "expansion": "New Latin silicium",
      "name": "der"
    },
    {
      "args": {
        "1": "la",
        "2": "silex",
        "3": "",
        "4": "flint, silica"
      },
      "expansion": "Latin silex (“flint, silica”)",
      "name": "noncog"
    }
  ],
  "etymology_text": "From callestr (“flint”) + -ai, a calque of English silicon or New Latin silicium, from Latin silex (“flint, silica”).",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-"
      },
      "expansion": "callestrai m (uncountable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "related": [
    {
      "english": "nitrogen",
      "word": "blorai"
    },
    {
      "english": "oxygen",
      "word": "ufelai"
    },
    {
      "english": "hydrogen",
      "word": "ulai"
    }
  ],
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Welsh entries with incorrect language header",
        "Welsh lemmas",
        "Welsh masculine nouns",
        "Welsh nouns",
        "Welsh terms calqued from English",
        "Welsh terms derived from English",
        "Welsh terms derived from New Latin",
        "Welsh terms suffixed with -ai",
        "Welsh terms with obsolete senses",
        "Welsh uncountable nouns",
        "cy:Obsolete chemical terminology"
      ],
      "glosses": [
        "silicon"
      ],
      "links": [
        [
          "silicon",
          "silicon"
        ]
      ],
      "raw_glosses": [
        "(obsolete) silicon"
      ],
      "synonyms": [
        {
          "word": "silicon"
        }
      ],
      "tags": [
        "masculine",
        "obsolete",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/kaˈɬɛsdrai̯/",
      "note": "cy"
    }
  ],
  "word": "callestrai"
}