"na-" meaning in Ilocano

{
  "head_templates": [
    {
      "args": {
        "1": "prefix",
        "b": "+"
      },
      "expansion": "na- (Kur-itan spelling ᜈ)",
      "name": "ilo-head"
    }
  ],
  "lang": "Ilocano",
  "lang_code": "ilo",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Ilocano entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Ilocano terms with Kur-itan script",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Ilocano terms with missing Kur-itan script entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Ilocano terms without pronunciation template",
          "parents": [
            "Pronunciation templates",
            "Templates"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "na- + dalus (“cleanliness”) → nadalus (“clean”)",
          "type": "example"
        }
      ],
      "glosses": [
        "forms adjectives indicating a quality"
      ],
      "id": "en-na--ilo-prefix-T~PpPIlb",
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "na-"
}

{
  "head_templates": [
    {
      "args": {
        "1": "prefix",
        "b": "+"
      },
      "expansion": "na- (Kur-itan spelling ᜈ)",
      "name": "ilo-head"
    }
  ],
  "lang": "Ilocano",
  "lang_code": "ilo",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        "Ilocano entries with incorrect language header",
        "Ilocano lemmas",
        "Ilocano prefixes",
        "Ilocano terms with Kur-itan script",
        "Ilocano terms with missing Kur-itan script entries",
        "Ilocano terms without pronunciation template"
      ],
      "examples": [
        {
          "text": "na- + dalus (“cleanliness”) → nadalus (“clean”)",
          "type": "example"
        }
      ],
      "glosses": [
        "forms adjectives indicating a quality"
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "na-"
}

{
  "called_from": "form_descriptions/1698",
  "msg": "unrecognized head form: Kur-itan spelling ᜈ",
  "path": [
    "na-"
  ],
  "section": "Ilocano",
  "subsection": "prefix",
  "title": "na-",
  "trace": ""
}