"lękać się" meaning in Polonais

{
  "categories": [
    {
      "kind": "other",
      "name": "Dénominaux en polonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions verbales en polonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Verbes imperfectifs en polonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Verbes pronominaux en polonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Wiktionnaire:Conjugaisons manquantes en polonais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Polonais",
      "orig": "polonais",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "lękliwy"
    }
  ],
  "etymology_texts": [
    "Dénominal de lęk, apparenté au tchèque lekat, leknout, à l’ukrainien лякатися, ljakátysja."
  ],
  "lang": "Polonais",
  "lang_code": "pl",
  "pos": "verb",
  "pos_title": "Locution verbale",
  "raw_tags": [
    "zlęknąć"
  ],
  "senses": [
    {
      "glosses": [
        "Avoir peur."
      ],
      "id": "fr-lękać_się-pl-verb-NSBU0VsW"
    }
  ],
  "sounds": [
    {
      "ipa": "\\lɛ̃ŋkaʨ̑‿ɕɛ\\"
    }
  ],
  "tags": [
    "imperfective",
    "perfective",
    "pronominal"
  ],
  "word": "lękać się"
}

{
  "categories": [
    "Dénominaux en polonais",
    "Locutions verbales en polonais",
    "Verbes imperfectifs en polonais",
    "Verbes pronominaux en polonais",
    "Wiktionnaire:Conjugaisons manquantes en polonais",
    "polonais"
  ],
  "derived": [
    {
      "word": "lękliwy"
    }
  ],
  "etymology_texts": [
    "Dénominal de lęk, apparenté au tchèque lekat, leknout, à l’ukrainien лякатися, ljakátysja."
  ],
  "lang": "Polonais",
  "lang_code": "pl",
  "pos": "verb",
  "pos_title": "Locution verbale",
  "raw_tags": [
    "zlęknąć"
  ],
  "senses": [
    {
      "glosses": [
        "Avoir peur."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\lɛ̃ŋkaʨ̑‿ɕɛ\\"
    }
  ],
  "tags": [
    "imperfective",
    "perfective",
    "pronominal"
  ],
  "word": "lękać się"
}