"булаг" meaning in Mongolian

{
  "etymology_templates": [
    {
      "args": {
        "1": "mn",
        "2": "xgn-pro",
        "3": "*bulag"
      },
      "expansion": "Proto-Mongolic *bulag",
      "name": "inh"
    },
    {
      "args": {
        "1": "bua",
        "2": "булаг"
      },
      "expansion": "Buryat булаг (bulag)",
      "name": "cog"
    },
    {
      "args": {
        "1": "xal",
        "2": "булг"
      },
      "expansion": "Kalmyk булг (bulg)",
      "name": "cog"
    }
  ],
  "etymology_text": "From Proto-Mongolic *bulag, Buryat булаг (bulag), Kalmyk булг (bulg).",
  "forms": [
    {
      "form": "bulag",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ᠪᠤᠯᠠᠭ",
      "roman": "bulag",
      "tags": [
        "Mongolian"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ᠪᠤᠯᠠᠭ"
      },
      "expansion": "булаг • (bulag) (Mongolian spelling ᠪᠤᠯᠠᠭ (bulag))",
      "name": "mn-noun"
    }
  ],
  "lang": "Mongolian",
  "lang_code": "mn",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Mongolian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Mongolian terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "roman": "bulgiin us",
          "word": "булгийн ус"
        },
        {
          "roman": "bulag övčin",
          "word": "булаг өвчин"
        }
      ],
      "glosses": [
        "spring, origin, source"
      ],
      "id": "en-булаг-mn-noun-HFwgRXtN",
      "links": [
        [
          "spring",
          "spring"
        ],
        [
          "origin",
          "origin"
        ],
        [
          "source",
          "source"
        ]
      ]
    }
  ],
  "word": "булаг"
}

{
  "derived": [
    {
      "roman": "bulgiin us",
      "word": "булгийн ус"
    },
    {
      "roman": "bulag övčin",
      "word": "булаг өвчин"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "mn",
        "2": "xgn-pro",
        "3": "*bulag"
      },
      "expansion": "Proto-Mongolic *bulag",
      "name": "inh"
    },
    {
      "args": {
        "1": "bua",
        "2": "булаг"
      },
      "expansion": "Buryat булаг (bulag)",
      "name": "cog"
    },
    {
      "args": {
        "1": "xal",
        "2": "булг"
      },
      "expansion": "Kalmyk булг (bulg)",
      "name": "cog"
    }
  ],
  "etymology_text": "From Proto-Mongolic *bulag, Buryat булаг (bulag), Kalmyk булг (bulg).",
  "forms": [
    {
      "form": "bulag",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ᠪᠤᠯᠠᠭ",
      "roman": "bulag",
      "tags": [
        "Mongolian"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ᠪᠤᠯᠠᠭ"
      },
      "expansion": "булаг • (bulag) (Mongolian spelling ᠪᠤᠯᠠᠭ (bulag))",
      "name": "mn-noun"
    }
  ],
  "lang": "Mongolian",
  "lang_code": "mn",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Mongolian 2-syllable words",
        "Mongolian entries with incorrect language header",
        "Mongolian lemmas",
        "Mongolian nouns",
        "Mongolian terms derived from Proto-Mongolic",
        "Mongolian terms inherited from Proto-Mongolic",
        "Mongolian terms with redundant script codes"
      ],
      "glosses": [
        "spring, origin, source"
      ],
      "links": [
        [
          "spring",
          "spring"
        ],
        [
          "origin",
          "origin"
        ],
        [
          "source",
          "source"
        ]
      ]
    }
  ],
  "word": "булаг"
}