"eti" meaning in Tok Pisin

{
  "etymology_templates": [
    {
      "args": {
        "1": "tpi",
        "2": "en",
        "3": "eighty"
      },
      "expansion": "English eighty",
      "name": "inh"
    }
  ],
  "etymology_text": "From English eighty.",
  "head_templates": [
    {
      "args": {
        "1": "tpi",
        "2": "numeral"
      },
      "expansion": "eti",
      "name": "head"
    }
  ],
  "lang": "Tok Pisin",
  "lang_code": "tpi",
  "pos": "num",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "name": "Tok Pisin cardinal numbers",
          "parents": [
            "Cardinal numbers",
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Tok Pisin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Tok Pisin entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "eighty"
      ],
      "id": "en-eti-tpi-num-Dbw0B6cI",
      "links": [
        [
          "eighty",
          "eighty"
        ]
      ]
    }
  ],
  "word": "eti"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "tpi",
        "2": "en",
        "3": "eighty"
      },
      "expansion": "English eighty",
      "name": "inh"
    }
  ],
  "etymology_text": "From English eighty.",
  "head_templates": [
    {
      "args": {
        "1": "tpi",
        "2": "numeral"
      },
      "expansion": "eti",
      "name": "head"
    }
  ],
  "lang": "Tok Pisin",
  "lang_code": "tpi",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Tok Pisin cardinal numbers",
        "Tok Pisin entries with incorrect language header",
        "Tok Pisin entries with language name categories using raw markup",
        "Tok Pisin lemmas",
        "Tok Pisin numerals",
        "Tok Pisin terms derived from English",
        "Tok Pisin terms inherited from English"
      ],
      "glosses": [
        "eighty"
      ],
      "links": [
        [
          "eighty",
          "eighty"
        ]
      ]
    }
  ],
  "word": "eti"
}