"peak detector" meaning in English

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      "form": "peak detectors",
      "tags": [
        "plural"
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      "expansion": "peak detector (plural peak detectors)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "name": "English entries with incorrect language header",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Electronics",
          "orig": "en:Electronics",
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            "All topics",
            "Fundamental"
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      ],
      "glosses": [
        "Synonym of envelope detector"
      ],
      "id": "en-peak_detector-en-noun-NHOPDvcV",
      "links": [
        [
          "electronics",
          "electronics"
        ],
        [
          "envelope detector",
          "envelope detector#English"
        ]
      ],
      "raw_glosses": [
        "(electronics) Synonym of envelope detector"
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "envelope detector"
        }
      ],
      "topics": [
        "business",
        "electrical-engineering",
        "electricity",
        "electromagnetism",
        "electronics",
        "energy",
        "engineering",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "peak detector"
}

{
  "forms": [
    {
      "form": "peak detectors",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "peak detector (plural peak detectors)",
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "Synonym of envelope detector"
      ],
      "links": [
        [
          "electronics",
          "electronics"
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        [
          "envelope detector",
          "envelope detector#English"
        ]
      ],
      "raw_glosses": [
        "(electronics) Synonym of envelope detector"
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "envelope detector"
        }
      ],
      "topics": [
        "business",
        "electrical-engineering",
        "electricity",
        "electromagnetism",
        "electronics",
        "energy",
        "engineering",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "peak detector"
}