"同窓" meaning in Japanese

{
  "forms": [
    {
      "form": "同窓",
      "ruby": [
        [
          "同",
          "どう"
        ],
        [
          "窓",
          "そう"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "dōsō",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "どうそう"
      },
      "expansion": "同(どう)窓(そう) • (dōsō)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "95 5",
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "92 8",
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "93 7",
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "schoolmate, graduates of the same school"
      ],
      "id": "en-同窓-ja-noun-bgZxz42X",
      "links": [
        [
          "schoolmate",
          "schoolmate"
        ],
        [
          "graduates",
          "graduates"
        ]
      ]
    },
    {
      "glosses": [
        "alumnus, alumni"
      ],
      "id": "en-同窓-ja-noun-kogDIDW2",
      "links": [
        [
          "alumnus",
          "alumnus"
        ],
        [
          "alumni",
          "alumni"
        ]
      ]
    }
  ],
  "word": "同窓"
}

{
  "categories": [
    "Japanese entries with incorrect language header",
    "Japanese lemmas",
    "Japanese links with redundant wikilinks",
    "Japanese nouns",
    "Japanese terms spelled with second grade kanji",
    "Japanese terms spelled with sixth grade kanji",
    "Japanese terms with redundant sortkeys",
    "Japanese terms written with two Han script characters"
  ],
  "forms": [
    {
      "form": "同窓",
      "ruby": [
        [
          "同",
          "どう"
        ],
        [
          "窓",
          "そう"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "dōsō",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "どうそう"
      },
      "expansion": "同(どう)窓(そう) • (dōsō)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "schoolmate, graduates of the same school"
      ],
      "links": [
        [
          "schoolmate",
          "schoolmate"
        ],
        [
          "graduates",
          "graduates"
        ]
      ]
    },
    {
      "glosses": [
        "alumnus, alumni"
      ],
      "links": [
        [
          "alumnus",
          "alumnus"
        ],
        [
          "alumni",
          "alumni"
        ]
      ]
    }
  ],
  "word": "同窓"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "同窓"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "同窓",
  "trace": ""
}