"hardener" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "harden",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "harden + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From harden + -er.",
  "forms": [
    {
      "form": "hardeners",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hardener (plural hardeners)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "examples": [
        {
          "text": "the hardener of hearts"
        }
      ],
      "glosses": [
        "One who, or that which, hardens."
      ],
      "id": "en-hardener-en-noun-QyhCE166",
      "links": [
        [
          "harden",
          "harden"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "21 79",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "16 84",
          "kind": "other",
          "name": "English terms suffixed with -er (agent noun)",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "22 78",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "23 77",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A chemical substance added to something in order to harden it; used especially with paints, varnishes and resins."
      ],
      "id": "en-hardener-en-noun-4e7o5wrY",
      "links": [
        [
          "chemical",
          "chemical"
        ],
        [
          "substance",
          "substance"
        ],
        [
          "harden",
          "harden"
        ],
        [
          "paint",
          "paint"
        ],
        [
          "varnish",
          "varnish"
        ],
        [
          "resin",
          "resin"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈhɑɹdn̩ɚ/",
      "tags": [
        "US"
      ]
    },
    {
      "ipa": "/ˈhɑɹdənɚ/",
      "tags": [
        "US"
      ]
    },
    {
      "ipa": "/ˈhɑːdn̩ə/",
      "tags": [
        "UK"
      ]
    },
    {
      "ipa": "/ˈhɑːdənə/",
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "hardener"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English terms suffixed with -er (agent noun)",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "harden",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "harden + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From harden + -er.",
  "forms": [
    {
      "form": "hardeners",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hardener (plural hardeners)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "examples": [
        {
          "text": "the hardener of hearts"
        }
      ],
      "glosses": [
        "One who, or that which, hardens."
      ],
      "links": [
        [
          "harden",
          "harden"
        ]
      ]
    },
    {
      "glosses": [
        "A chemical substance added to something in order to harden it; used especially with paints, varnishes and resins."
      ],
      "links": [
        [
          "chemical",
          "chemical"
        ],
        [
          "substance",
          "substance"
        ],
        [
          "harden",
          "harden"
        ],
        [
          "paint",
          "paint"
        ],
        [
          "varnish",
          "varnish"
        ],
        [
          "resin",
          "resin"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈhɑɹdn̩ɚ/",
      "tags": [
        "US"
      ]
    },
    {
      "ipa": "/ˈhɑɹdənɚ/",
      "tags": [
        "US"
      ]
    },
    {
      "ipa": "/ˈhɑːdn̩ə/",
      "tags": [
        "UK"
      ]
    },
    {
      "ipa": "/ˈhɑːdənə/",
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "hardener"
}