"чаща" meaning in Russe

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Russe",
      "orig": "russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Étymologies en russe incluant une reconstruction",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "чащоба"
    }
  ],
  "etymology_texts": [
    "Il est pour *čęsti̯ā ; de частый, častyï (« dense »)."
  ],
  "lang": "Russe",
  "lang_code": "ru",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "čašča"
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en russe",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Lexique en russe de la sylviculture",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Лесная чаща.",
          "translation": "Sous-bois touffu."
        }
      ],
      "glosses": [
        "Fourré, buisson."
      ],
      "id": "fr-чаща-ru-noun-xtPwJqCD",
      "topics": [
        "forestry"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\t͡ɕæɕːə\\"
    }
  ],
  "synonyms": [
    {
      "word": "заросль"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "чаща"
}

{
  "categories": [
    "Lemmes en russe",
    "Noms communs en russe",
    "russe",
    "Étymologies en russe incluant une reconstruction"
  ],
  "derived": [
    {
      "word": "чащоба"
    }
  ],
  "etymology_texts": [
    "Il est pour *čęsti̯ā ; de частый, častyï (« dense »)."
  ],
  "lang": "Russe",
  "lang_code": "ru",
  "pos": "noun",
  "pos_title": "Nom commun",
  "raw_tags": [
    "čašča"
  ],
  "senses": [
    {
      "categories": [
        "Exemples en russe",
        "Lexique en russe de la sylviculture"
      ],
      "examples": [
        {
          "text": "Лесная чаща.",
          "translation": "Sous-bois touffu."
        }
      ],
      "glosses": [
        "Fourré, buisson."
      ],
      "topics": [
        "forestry"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\t͡ɕæɕːə\\"
    }
  ],
  "synonyms": [
    {
      "word": "заросль"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "чаща"
}