"sanu" meaning in Iban

{
  "etymology_templates": [
    {
      "args": {
        "1": "iba",
        "2": "poz-pro",
        "3": "*a-nu"
      },
      "expansion": "Proto-Malayo-Polynesian *a-nu",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Malayo-Polynesian *a-nu.",
  "head_templates": [
    {
      "args": {
        "1": "iba",
        "2": "pronoun"
      },
      "expansion": "sanu",
      "name": "head"
    }
  ],
  "lang": "Iban",
  "lang_code": "iba",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Iban entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Iban pronouns",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 7 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "someone whose name is unknown or left unmentioned, typically as a filler word."
      ],
      "id": "en-sanu-iba-pron-Mu7E3yFG"
    }
  ],
  "sounds": [
    {
      "ipa": "/sanuʔ/"
    },
    {
      "rhymes": "-anu"
    },
    {
      "rhymes": "-nu"
    },
    {
      "rhymes": "-u"
    }
  ],
  "word": "sanu"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "iba",
        "2": "poz-pro",
        "3": "*a-nu"
      },
      "expansion": "Proto-Malayo-Polynesian *a-nu",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Malayo-Polynesian *a-nu.",
  "head_templates": [
    {
      "args": {
        "1": "iba",
        "2": "pronoun"
      },
      "expansion": "sanu",
      "name": "head"
    }
  ],
  "lang": "Iban",
  "lang_code": "iba",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        "Iban entries with incorrect language header",
        "Iban lemmas",
        "Iban pronouns",
        "Iban terms derived from Proto-Malayo-Polynesian",
        "Iban terms inherited from Proto-Malayo-Polynesian",
        "Pages with 7 entries",
        "Pages with entries",
        "Rhymes:Iban/anu",
        "Rhymes:Iban/nu",
        "Rhymes:Iban/u"
      ],
      "glosses": [
        "someone whose name is unknown or left unmentioned, typically as a filler word."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sanuʔ/"
    },
    {
      "rhymes": "-anu"
    },
    {
      "rhymes": "-nu"
    },
    {
      "rhymes": "-u"
    }
  ],
  "word": "sanu"
}