"restrainer" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "restrain",
        "3": "er"
      },
      "expansion": "restrain + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From restrain + -er.",
  "forms": [
    {
      "form": "restrainers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "restrainer (plural restrainers)",
      "name": "en-noun"
    }
  ],
  "hyphenation": [
    "re‧strain‧er"
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "Something that restrains"
      ],
      "id": "en-restrainer-en-noun-pM2jkQO9",
      "links": [
        [
          "restrain",
          "restrain"
        ]
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Photography",
          "orig": "en:Photography",
          "parents": [
            "Art",
            "Human activity",
            "Media",
            "Culture",
            "Human behaviour",
            "Communication",
            "Society",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "39 61",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w+disamb"
        },
        {
          "_dis": "42 58",
          "kind": "other",
          "name": "English terms suffixed with -er",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "41 59",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "43 57",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A chemical compound (such as potassium bromide), added to a developer to prevent fogging"
      ],
      "id": "en-restrainer-en-noun-oyFx1HYv",
      "links": [
        [
          "photography",
          "photography"
        ],
        [
          "chemical compound",
          "chemical compound"
        ],
        [
          "potassium bromide",
          "potassium bromide"
        ],
        [
          "developer",
          "developer"
        ],
        [
          "fogging",
          "fogging"
        ]
      ],
      "raw_glosses": [
        "(photography) A chemical compound (such as potassium bromide), added to a developer to prevent fogging"
      ],
      "topics": [
        "arts",
        "hobbies",
        "lifestyle",
        "photography"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɹɪˈstreɪnɚ/",
      "tags": [
        "General-American"
      ]
    },
    {
      "ipa": "/ɹɪˈstreɪnə/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "rhymes": "-eɪnə(ɹ)"
    }
  ],
  "word": "restrainer"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English terms suffixed with -er",
    "Pages with 1 entry",
    "Pages with entries",
    "Rhymes:English/eɪnə(ɹ)",
    "Rhymes:English/eɪnə(ɹ)/3 syllables"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "restrain",
        "3": "er"
      },
      "expansion": "restrain + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From restrain + -er.",
  "forms": [
    {
      "form": "restrainers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "restrainer (plural restrainers)",
      "name": "en-noun"
    }
  ],
  "hyphenation": [
    "re‧strain‧er"
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "Something that restrains"
      ],
      "links": [
        [
          "restrain",
          "restrain"
        ]
      ]
    },
    {
      "categories": [
        "en:Photography"
      ],
      "glosses": [
        "A chemical compound (such as potassium bromide), added to a developer to prevent fogging"
      ],
      "links": [
        [
          "photography",
          "photography"
        ],
        [
          "chemical compound",
          "chemical compound"
        ],
        [
          "potassium bromide",
          "potassium bromide"
        ],
        [
          "developer",
          "developer"
        ],
        [
          "fogging",
          "fogging"
        ]
      ],
      "raw_glosses": [
        "(photography) A chemical compound (such as potassium bromide), added to a developer to prevent fogging"
      ],
      "topics": [
        "arts",
        "hobbies",
        "lifestyle",
        "photography"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɹɪˈstreɪnɚ/",
      "tags": [
        "General-American"
      ]
    },
    {
      "ipa": "/ɹɪˈstreɪnə/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "rhymes": "-eɪnə(ɹ)"
    }
  ],
  "word": "restrainer"
}