"counter curve" meaning in English

{
  "forms": [
    {
      "form": "counter curves",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "counter curve (plural counter curves)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1990 May-June, Yoga Journal",
          "text": "There may also be a counter curve to the left in the lumbar region, but the curve is less severe.",
          "type": "quotation"
        },
        {
          "ref": "1897, Witham T. Maxwell, A System Of Figure-skating: Being The Theory And Practice Of The Art, pages 174-175",
          "text": "It is curious that, in spite of the explanation of the counter curve which was given twenty years ago, in explaining the manner in which Cupid's bow was possible, it is only in quite recent times that skaters have recognised that the small counter curve which follows the rocker and precedes the counter does not indicate an actual change of edge, but is in fact only the necessary result while preserving the line of progression of reversing the direction of the skate.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A curve running in the opposite direction to another curve."
      ],
      "id": "en-counter_curve-en-noun-IqXxT5lD",
      "links": [
        [
          "curve",
          "curve"
        ]
      ]
    }
  ],
  "word": "counter curve"
}

{
  "forms": [
    {
      "form": "counter curves",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "counter curve (plural counter curves)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1990 May-June, Yoga Journal",
          "text": "There may also be a counter curve to the left in the lumbar region, but the curve is less severe.",
          "type": "quotation"
        },
        {
          "ref": "1897, Witham T. Maxwell, A System Of Figure-skating: Being The Theory And Practice Of The Art, pages 174-175",
          "text": "It is curious that, in spite of the explanation of the counter curve which was given twenty years ago, in explaining the manner in which Cupid's bow was possible, it is only in quite recent times that skaters have recognised that the small counter curve which follows the rocker and precedes the counter does not indicate an actual change of edge, but is in fact only the necessary result while preserving the line of progression of reversing the direction of the skate.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A curve running in the opposite direction to another curve."
      ],
      "links": [
        [
          "curve",
          "curve"
        ]
      ]
    }
  ],
  "word": "counter curve"
}