"bungsu" meaning in Iban

{
  "etymology_templates": [
    {
      "args": {
        "1": "iba",
        "2": "ms",
        "3": "bongsu"
      },
      "expansion": "Malay bongsu",
      "name": "bor"
    }
  ],
  "etymology_text": "From Malay bongsu.",
  "head_templates": [
    {
      "args": {
        "1": "iba",
        "2": "adjective"
      },
      "expansion": "bungsu",
      "name": "head"
    }
  ],
  "lang": "Iban",
  "lang_code": "iba",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Iban entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "lastborn (born last in a family)"
      ],
      "id": "en-bungsu-iba-adj-zelfOMyW",
      "links": [
        [
          "lastborn",
          "lastborn"
        ]
      ]
    }
  ],
  "word": "bungsu"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "iba",
        "2": "ms",
        "3": "bongsu"
      },
      "expansion": "Malay bongsu",
      "name": "bor"
    }
  ],
  "etymology_text": "From Malay bongsu.",
  "head_templates": [
    {
      "args": {
        "1": "iba",
        "2": "adjective"
      },
      "expansion": "bungsu",
      "name": "head"
    }
  ],
  "lang": "Iban",
  "lang_code": "iba",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Iban adjectives",
        "Iban entries with incorrect language header",
        "Iban lemmas",
        "Iban terms borrowed from Malay",
        "Iban terms derived from Malay",
        "Pages with 4 entries",
        "Pages with entries"
      ],
      "glosses": [
        "lastborn (born last in a family)"
      ],
      "links": [
        [
          "lastborn",
          "lastborn"
        ]
      ]
    }
  ],
  "word": "bungsu"
}