"sother" meaning in English

{
  "forms": [
    {
      "form": "sothers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sother (plural sothers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1982 April 3, Nancy Walker, “Moving”, in Gay Community News, page 6:",
          "text": "I suppose, even for a nester, which I most assuredly am, there comes a time for moving on, and the time has finally come for my sother and me to leave Boston's Back Bay for other, not necessarily greener pastures.",
          "type": "quote"
        }
      ],
      "glosses": [
        "significant other"
      ],
      "id": "en-sother-en-noun-nKMFoNzm",
      "links": [
        [
          "significant other",
          "significant other"
        ]
      ]
    }
  ],
  "word": "sother"
}

{
  "forms": [
    {
      "form": "sothers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sother (plural sothers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1982 April 3, Nancy Walker, “Moving”, in Gay Community News, page 6:",
          "text": "I suppose, even for a nester, which I most assuredly am, there comes a time for moving on, and the time has finally come for my sother and me to leave Boston's Back Bay for other, not necessarily greener pastures.",
          "type": "quote"
        }
      ],
      "glosses": [
        "significant other"
      ],
      "links": [
        [
          "significant other",
          "significant other"
        ]
      ]
    }
  ],
  "word": "sother"
}