"aineistumaisillaan" meaning in Finnish

{
  "head_templates": [
    {
      "args": {
        "1": "fi",
        "2": "verb form"
      },
      "expansion": "aineistumaisillaan",
      "name": "head"
    }
  ],
  "lang": "Finnish",
  "lang_code": "fi",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Finnish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "the fifth infinitive of aineistua"
        }
      ],
      "glosses": [
        "third-person form of the fifth infinitive of aineistua"
      ],
      "id": "en-aineistumaisillaan-fi-verb-1gR4WfcV",
      "links": [
        [
          "aineistua",
          "aineistua#Finnish"
        ]
      ],
      "tags": [
        "form-of",
        "third-person"
      ]
    }
  ],
  "word": "aineistumaisillaan"
}

{
  "head_templates": [
    {
      "args": {
        "1": "fi",
        "2": "verb form"
      },
      "expansion": "aineistumaisillaan",
      "name": "head"
    }
  ],
  "lang": "Finnish",
  "lang_code": "fi",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Finnish entries with incorrect language header",
        "Finnish fifth infinitives",
        "Finnish non-lemma forms",
        "Finnish verb forms",
        "Pages with 1 entry"
      ],
      "form_of": [
        {
          "word": "the fifth infinitive of aineistua"
        }
      ],
      "glosses": [
        "third-person form of the fifth infinitive of aineistua"
      ],
      "links": [
        [
          "aineistua",
          "aineistua#Finnish"
        ]
      ],
      "tags": [
        "form-of",
        "third-person"
      ]
    }
  ],
  "word": "aineistumaisillaan"
}