"coil spring" meaning in English

{
  "forms": [
    {
      "form": "coil springs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "coil spring (plural coil springs)",
      "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": "1962 June, “The design of the S.R. electro-diesels”, in Modern Railways, page 395",
          "text": "The nests of coil springs at each end of the bolster, resting on the spring plank, are in line with the swing links between the swing plank and the one-piece fabricated bogie frame; [...].",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A common type of mechanical spring in a form of a helix, manufactured in different styles and sizes for many different applications."
      ],
      "id": "en-coil_spring-en-noun-ixscsUuu",
      "links": [
        [
          "helix",
          "helix"
        ]
      ],
      "related": [
        {
          "word": "coil-sprung"
        }
      ]
    }
  ],
  "word": "coil spring"
}

{
  "forms": [
    {
      "form": "coil springs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "coil spring (plural coil springs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "coil-sprung"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1962 June, “The design of the S.R. electro-diesels”, in Modern Railways, page 395",
          "text": "The nests of coil springs at each end of the bolster, resting on the spring plank, are in line with the swing links between the swing plank and the one-piece fabricated bogie frame; [...].",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A common type of mechanical spring in a form of a helix, manufactured in different styles and sizes for many different applications."
      ],
      "links": [
        [
          "helix",
          "helix"
        ]
      ]
    }
  ],
  "word": "coil spring"
}