"wanpela" meaning in Tok Pisin

{
  "etymology_templates": [
    {
      "args": {
        "1": "tpi",
        "2": "wan",
        "3": "-pela"
      },
      "expansion": "wan + -pela",
      "name": "affix"
    }
  ],
  "etymology_text": "From wan + -pela.",
  "head_templates": [
    {
      "args": {
        "1": "tpi",
        "2": "adjective"
      },
      "expansion": "wanpela",
      "name": "head"
    }
  ],
  "lang": "Tok Pisin",
  "lang_code": "tpi",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "_dis": "68 32",
          "kind": "topical",
          "langcode": "tpi",
          "name": "One",
          "orig": "tpi:One",
          "parents": [
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "one"
      ],
      "id": "en-wanpela-tpi-adj-dpLDrTVA",
      "links": [
        [
          "one",
          "one"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "1 99",
          "kind": "other",
          "name": "Tok Pisin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "0 100",
          "kind": "other",
          "name": "Tok Pisin terms suffixed with -pela",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Used as the indefinite article."
      ],
      "id": "en-wanpela-tpi-adj-S~9cNWXI",
      "links": [
        [
          "indefinite article",
          "indefinite article#English"
        ]
      ]
    }
  ],
  "word": "wanpela"
}

{
  "categories": [
    "Tok Pisin adjectives",
    "Tok Pisin entries with incorrect language header",
    "Tok Pisin lemmas",
    "Tok Pisin terms suffixed with -pela",
    "tpi:One"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "tpi",
        "2": "wan",
        "3": "-pela"
      },
      "expansion": "wan + -pela",
      "name": "affix"
    }
  ],
  "etymology_text": "From wan + -pela.",
  "head_templates": [
    {
      "args": {
        "1": "tpi",
        "2": "adjective"
      },
      "expansion": "wanpela",
      "name": "head"
    }
  ],
  "lang": "Tok Pisin",
  "lang_code": "tpi",
  "pos": "adj",
  "senses": [
    {
      "glosses": [
        "one"
      ],
      "links": [
        [
          "one",
          "one"
        ]
      ]
    },
    {
      "glosses": [
        "Used as the indefinite article."
      ],
      "links": [
        [
          "indefinite article",
          "indefinite article#English"
        ]
      ]
    }
  ],
  "word": "wanpela"
}