"illision" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "illisio"
      },
      "expansion": "Latin illisio",
      "name": "uder"
    }
  ],
  "etymology_text": "Latin illisio, from illidere, illisum, to strike against; prefix il- in + laedere to strike.",
  "forms": [
    {
      "form": "illisions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "illision (plural illisions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "The act of dashing or striking against."
      ],
      "id": "en-illision-en-noun-h61AZnWZ",
      "links": [
        [
          "dash",
          "dash"
        ],
        [
          "striking",
          "strike"
        ]
      ],
      "raw_glosses": [
        "(obsolete) The act of dashing or striking against."
      ],
      "tags": [
        "obsolete"
      ]
    }
  ],
  "word": "illision"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "illisio"
      },
      "expansion": "Latin illisio",
      "name": "uder"
    }
  ],
  "etymology_text": "Latin illisio, from illidere, illisum, to strike against; prefix il- in + laedere to strike.",
  "forms": [
    {
      "form": "illisions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "illision (plural illisions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms derived from Latin",
        "English terms with obsolete senses",
        "English undefined derivations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "The act of dashing or striking against."
      ],
      "links": [
        [
          "dash",
          "dash"
        ],
        [
          "striking",
          "strike"
        ]
      ],
      "raw_glosses": [
        "(obsolete) The act of dashing or striking against."
      ],
      "tags": [
        "obsolete"
      ]
    }
  ],
  "word": "illision"
}