"staen" meaning in Breton

{
  "etymology_templates": [
    {
      "args": {
        "1": "br",
        "2": "fro",
        "3": "estain"
      },
      "expansion": "Old French estain",
      "name": "bor"
    },
    {
      "args": {
        "1": "br",
        "2": "cel-bry-pro",
        "3": "*staɨn"
      },
      "expansion": "Proto-Brythonic *staɨn",
      "name": "inh"
    }
  ],
  "etymology_text": "Borrowed from Old French estain, or inherited from Proto-Brythonic *staɨn.",
  "head_templates": [
    {
      "args": {
        "1": "br",
        "2": "noun",
        "g": "m"
      },
      "expansion": "staen m",
      "name": "head"
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Breton entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "br",
          "name": "Chemical elements",
          "orig": "br:Chemical elements",
          "parents": [
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "br",
          "name": "Metals",
          "orig": "br:Metals",
          "parents": [
            "Matter",
            "Metallurgy",
            "Chemistry",
            "Nature",
            "Technology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "tin"
      ],
      "id": "en-staen-br-noun-q1R3V9o3",
      "links": [
        [
          "tin",
          "tin#English"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "staen"
}

{
  "categories": [
    "cy:Appearance",
    "cy:Liquids"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "br",
        "2": "fro",
        "3": "estain"
      },
      "expansion": "Old French estain",
      "name": "bor"
    },
    {
      "args": {
        "1": "br",
        "2": "cel-bry-pro",
        "3": "*staɨn"
      },
      "expansion": "Proto-Brythonic *staɨn",
      "name": "inh"
    }
  ],
  "etymology_text": "Borrowed from Old French estain, or inherited from Proto-Brythonic *staɨn.",
  "head_templates": [
    {
      "args": {
        "1": "br",
        "2": "noun",
        "g": "m"
      },
      "expansion": "staen m",
      "name": "head"
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Breton entries with incorrect language header",
        "Breton lemmas",
        "Breton masculine nouns",
        "Breton nouns",
        "Breton terms borrowed from Old French",
        "Breton terms derived from Old French",
        "Breton terms derived from Proto-Brythonic",
        "Breton terms inherited from Proto-Brythonic",
        "br:Chemical elements",
        "br:Metals"
      ],
      "glosses": [
        "tin"
      ],
      "links": [
        [
          "tin",
          "tin#English"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "staen"
}