"πλήσσειν" meaning in Ancient Greek

{
  "forms": [
    {
      "form": "plḗssein",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "πλήσσειν • (plḗssein)",
      "name": "grc-verb form"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Ancient Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Ancient Greek terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "plḗssō",
          "word": "πλήσσω"
        }
      ],
      "glosses": [
        "present active infinitive of πλήσσω (plḗssō)"
      ],
      "id": "en-πλήσσειν-grc-verb-sYiaiX54",
      "links": [
        [
          "πλήσσω",
          "πλήσσω#Ancient Greek"
        ]
      ],
      "tags": [
        "active",
        "form-of",
        "infinitive",
        "present"
      ]
    }
  ],
  "word": "πλήσσειν"
}

{
  "forms": [
    {
      "form": "plḗssein",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "πλήσσειν • (plḗssein)",
      "name": "grc-verb form"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Ancient Greek entries with incorrect language header",
        "Ancient Greek non-lemma forms",
        "Ancient Greek paroxytone terms",
        "Ancient Greek terms with redundant script codes",
        "Ancient Greek verb forms"
      ],
      "form_of": [
        {
          "extra": "plḗssō",
          "word": "πλήσσω"
        }
      ],
      "glosses": [
        "present active infinitive of πλήσσω (plḗssō)"
      ],
      "links": [
        [
          "πλήσσω",
          "πλήσσω#Ancient Greek"
        ]
      ],
      "tags": [
        "active",
        "form-of",
        "infinitive",
        "present"
      ]
    }
  ],
  "word": "πλήσσειν"
}