"reverb plate" meaning in English

{
  "forms": [
    {
      "form": "reverb plates",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "reverb plate (plural reverb plates)",
      "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",
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          "source": "w"
        },
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          "source": "w"
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sound engineering",
          "orig": "en:Sound engineering",
          "parents": [
            "Engineering",
            "Sound",
            "Applied sciences",
            "Technology",
            "Energy",
            "Sciences",
            "All topics",
            "Nature",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "A metal plate used in a plate reverb device."
      ],
      "id": "en-reverb_plate-en-noun-Mpa4K72b",
      "links": [
        [
          "sound engineering",
          "sound engineering"
        ],
        [
          "plate reverb",
          "plate reverb"
        ]
      ],
      "qualifier": "sound recording; sound engineering; sound recording; sound engineering",
      "raw_glosses": [
        "(sound recording, sound engineering) A metal plate used in a plate reverb device."
      ]
    }
  ],
  "word": "reverb plate"
}

{
  "forms": [
    {
      "form": "reverb plates",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "reverb plate (plural reverb plates)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
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        "English lemmas",
        "English multiword terms",
        "English nouns",
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        "en:Sound engineering"
      ],
      "glosses": [
        "A metal plate used in a plate reverb device."
      ],
      "links": [
        [
          "sound engineering",
          "sound engineering"
        ],
        [
          "plate reverb",
          "plate reverb"
        ]
      ],
      "qualifier": "sound recording; sound engineering; sound recording; sound engineering",
      "raw_glosses": [
        "(sound recording, sound engineering) A metal plate used in a plate reverb device."
      ]
    }
  ],
  "word": "reverb plate"
}