"ασκητεύω" meaning in Greek

{
  "forms": [
    {
      "form": "askitévo",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ασκήτεψα",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "verbs",
        "head": "",
        "sort": ""
      },
      "expansion": "ασκητεύω • (askitévo)",
      "name": "head"
    },
    {
      "args": {
        "past": "ασκήτεψα"
      },
      "expansion": "ασκητεύω • (askitévo) (past ασκήτεψα)",
      "name": "el-verb"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "to be (an) ascetic, to be austere"
      ],
      "id": "en-ασκητεύω-el-verb-gp-lv7Xf",
      "links": [
        [
          "ascetic",
          "ascetic"
        ],
        [
          "austere",
          "austere"
        ]
      ],
      "related": [
        {
          "english": "ascetic",
          "roman": "askitikós",
          "sense": "see",
          "tags": [
            "adjective"
          ],
          "word": "ασκητικός"
        }
      ]
    }
  ],
  "word": "ασκητεύω"
}

{
  "forms": [
    {
      "form": "askitévo",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "ασκήτεψα",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "verbs",
        "head": "",
        "sort": ""
      },
      "expansion": "ασκητεύω • (askitévo)",
      "name": "head"
    },
    {
      "args": {
        "past": "ασκήτεψα"
      },
      "expansion": "ασκητεύω • (askitévo) (past ασκήτεψα)",
      "name": "el-verb"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "verb",
  "related": [
    {
      "english": "ascetic",
      "roman": "askitikós",
      "sense": "see",
      "tags": [
        "adjective"
      ],
      "word": "ασκητικός"
    }
  ],
  "senses": [
    {
      "categories": [
        "Greek entries with incorrect language header",
        "Greek lemmas",
        "Greek verbs"
      ],
      "glosses": [
        "to be (an) ascetic, to be austere"
      ],
      "links": [
        [
          "ascetic",
          "ascetic"
        ],
        [
          "austere",
          "austere"
        ]
      ]
    }
  ],
  "word": "ασκητεύω"
}