"lengthener" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "lengthen",
        "3": "er"
      },
      "expansion": "lengthen + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From lengthen + -er.",
  "forms": [
    {
      "form": "lengtheners",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lengthener (plural lengtheners)",
      "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"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -er",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "word": "shortener"
        }
      ],
      "examples": [
        {
          "text": "This exercise is a great leg lengthener.",
          "type": "example"
        },
        {
          "text": "I went to the store to get some eyelash lengtheners.",
          "type": "example"
        },
        {
          "ref": "1877, George Edwin Waring, Waring's Book of the Farm, page 325:",
          "text": "RYE is the great lengthener of the seasons.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A person or thing that lengthens something"
      ],
      "id": "en-lengthener-en-noun-Uxsememg",
      "links": [
        [
          "lengthen",
          "lengthen"
        ]
      ],
      "synonyms": [
        {
          "word": "extender"
        }
      ]
    }
  ],
  "word": "lengthener"
}

{
  "coordinate_terms": [
    {
      "word": "shortener"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "lengthen",
        "3": "er"
      },
      "expansion": "lengthen + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From lengthen + -er.",
  "forms": [
    {
      "form": "lengtheners",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lengthener (plural lengtheners)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English agent nouns",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -er",
        "English terms with quotations",
        "English terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "text": "This exercise is a great leg lengthener.",
          "type": "example"
        },
        {
          "text": "I went to the store to get some eyelash lengtheners.",
          "type": "example"
        },
        {
          "ref": "1877, George Edwin Waring, Waring's Book of the Farm, page 325:",
          "text": "RYE is the great lengthener of the seasons.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A person or thing that lengthens something"
      ],
      "links": [
        [
          "lengthen",
          "lengthen"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "extender"
    }
  ],
  "word": "lengthener"
}