"curlless" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "curl",
        "3": "-less"
      },
      "expansion": "curl + -less",
      "name": "af"
    }
  ],
  "etymology_text": "curl + -less",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "curlless (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "glosses": [
        "irrotational"
      ],
      "id": "en-curlless-en-adj-fissqQxX",
      "links": [
        [
          "irrotational",
          "irrotational"
        ]
      ],
      "qualifier": "vector calculus",
      "raw_glosses": [
        "(vector calculus) irrotational"
      ],
      "tags": [
        "not-comparable"
      ]
    },
    {
      "categories": [
        {
          "_dis": "36 64",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "9 91",
          "kind": "other",
          "name": "English terms suffixed with -less",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "having no curls"
      ],
      "id": "en-curlless-en-adj-xkJB3QI4",
      "links": [
        [
          "curl",
          "curl"
        ]
      ],
      "raw_glosses": [
        "(of e.g. hair) having no curls"
      ],
      "raw_tags": [
        "of e.g. hair"
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "curlless"
}

{
  "categories": [
    "English adjectives",
    "English entries with incorrect language header",
    "English lemmas",
    "English terms suffixed with -less",
    "English uncomparable adjectives"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "curl",
        "3": "-less"
      },
      "expansion": "curl + -less",
      "name": "af"
    }
  ],
  "etymology_text": "curl + -less",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "curlless (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "glosses": [
        "irrotational"
      ],
      "links": [
        [
          "irrotational",
          "irrotational"
        ]
      ],
      "qualifier": "vector calculus",
      "raw_glosses": [
        "(vector calculus) irrotational"
      ],
      "tags": [
        "not-comparable"
      ]
    },
    {
      "glosses": [
        "having no curls"
      ],
      "links": [
        [
          "curl",
          "curl"
        ]
      ],
      "raw_glosses": [
        "(of e.g. hair) having no curls"
      ],
      "raw_tags": [
        "of e.g. hair"
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "curlless"
}