"-нөө" meaning in Mongolian

{
  "forms": [
    {
      "form": "-nöö",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mn",
        "2": "suffix form"
      },
      "expansion": "-нөө • (-nöö)",
      "name": "head"
    }
  ],
  "lang": "Mongolian",
  "lang_code": "mn",
  "pos": "contraction",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Mongolian entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "rounded front vowel harmonic form of -наа (-naa); itself a contraction of -на аа (-na aa)."
      ],
      "id": "en--нөө-mn-contraction-BTis9VoC",
      "links": [
        [
          "-наа",
          "-наа#Mongolian"
        ],
        [
          "-на",
          "-на#Mongolian"
        ],
        [
          "аа",
          "аа#Etymology 2"
        ]
      ],
      "tags": [
        "contraction"
      ]
    }
  ],
  "word": "-нөө"
}

{
  "forms": [
    {
      "form": "-nöö",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mn",
        "2": "suffix form"
      },
      "expansion": "-нөө • (-nöö)",
      "name": "head"
    }
  ],
  "lang": "Mongolian",
  "lang_code": "mn",
  "pos": "contraction",
  "senses": [
    {
      "categories": [
        "Mongolian contractions",
        "Mongolian entries with incorrect language header",
        "Mongolian non-lemma forms",
        "Mongolian suffix forms",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "rounded front vowel harmonic form of -наа (-naa); itself a contraction of -на аа (-na aa)."
      ],
      "links": [
        [
          "-наа",
          "-наа#Mongolian"
        ],
        [
          "-на",
          "-на#Mongolian"
        ],
        [
          "аа",
          "аа#Etymology 2"
        ]
      ],
      "tags": [
        "contraction"
      ]
    }
  ],
  "word": "-нөө"
}