"σιωπᾶν" meaning in Ancient Greek

{
  "forms": [
    {
      "form": "siōpân",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "σιωπᾶν • (siōpân)",
      "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": "siōpáō",
          "word": "σιωπάω"
        }
      ],
      "glosses": [
        "present active infinitive of σιωπάω (siōpáō)"
      ],
      "id": "en-σιωπᾶν-grc-verb-RD6B3pPz",
      "links": [
        [
          "σιωπάω",
          "σιωπάω#Ancient Greek"
        ]
      ],
      "tags": [
        "active",
        "form-of",
        "infinitive",
        "present"
      ]
    }
  ],
  "word": "σιωπᾶν"
}

{
  "forms": [
    {
      "form": "siōpân",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "σιωπᾶν • (siōpân)",
      "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 perispomenon terms",
        "Ancient Greek terms with redundant script codes",
        "Ancient Greek verb forms"
      ],
      "form_of": [
        {
          "extra": "siōpáō",
          "word": "σιωπάω"
        }
      ],
      "glosses": [
        "present active infinitive of σιωπάω (siōpáō)"
      ],
      "links": [
        [
          "σιωπάω",
          "σιωπάω#Ancient Greek"
        ]
      ],
      "tags": [
        "active",
        "form-of",
        "infinitive",
        "present"
      ]
    }
  ],
  "word": "σιωπᾶν"
}