"calcitrant" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "-"
      },
      "expansion": "Latin",
      "name": "uder"
    },
    {
      "args": {},
      "expansion": "",
      "name": "lena"
    }
  ],
  "etymology_text": "Latin\n calcitrans, present participle of calcitrare (“to kick”), from calx (“heel”), calcis (“heel”).",
  "forms": [
    {
      "form": "more calcitrant",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most calcitrant",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "calcitrant (comparative more calcitrant, superlative most calcitrant)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "stubborn; refractory"
      ],
      "id": "en-calcitrant-en-adj-pzsz7wiK",
      "links": [
        [
          "stubborn",
          "stubborn"
        ],
        [
          "refractory",
          "refractory"
        ]
      ]
    }
  ],
  "word": "calcitrant"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "-"
      },
      "expansion": "Latin",
      "name": "uder"
    },
    {
      "args": {},
      "expansion": "",
      "name": "lena"
    }
  ],
  "etymology_text": "Latin\n calcitrans, present participle of calcitrare (“to kick”), from calx (“heel”), calcis (“heel”).",
  "forms": [
    {
      "form": "more calcitrant",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most calcitrant",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "calcitrant (comparative more calcitrant, superlative most calcitrant)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms derived from Latin",
        "English undefined derivations",
        "Requests for attention in Latin etymologies"
      ],
      "glosses": [
        "stubborn; refractory"
      ],
      "links": [
        [
          "stubborn",
          "stubborn"
        ],
        [
          "refractory",
          "refractory"
        ]
      ]
    }
  ],
  "word": "calcitrant"
}