"kaa" meaning in Choctaw

{
  "etymology_templates": [
    {
      "args": {
        "1": "cho",
        "2": "en",
        "3": "car"
      },
      "expansion": "English car",
      "name": "bor"
    }
  ],
  "etymology_text": "From English car.",
  "head_templates": [
    {
      "args": {
        "1": "cho",
        "2": "noun"
      },
      "expansion": "kaa",
      "name": "head"
    }
  ],
  "lang": "Choctaw",
  "lang_code": "cho",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Choctaw entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "car"
      ],
      "id": "en-kaa-cho-noun-KylhpDGy",
      "links": [
        [
          "car",
          "car"
        ]
      ]
    }
  ],
  "word": "kaa"
}

{
  "categories": [
    "yo:Body parts",
    "yo:Vehicles"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "cho",
        "2": "en",
        "3": "car"
      },
      "expansion": "English car",
      "name": "bor"
    }
  ],
  "etymology_text": "From English car.",
  "head_templates": [
    {
      "args": {
        "1": "cho",
        "2": "noun"
      },
      "expansion": "kaa",
      "name": "head"
    }
  ],
  "lang": "Choctaw",
  "lang_code": "cho",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Choctaw entries with incorrect language header",
        "Choctaw lemmas",
        "Choctaw nouns",
        "Choctaw terms borrowed from English",
        "Choctaw terms derived from English"
      ],
      "glosses": [
        "car"
      ],
      "links": [
        [
          "car",
          "car"
        ]
      ]
    }
  ],
  "word": "kaa"
}