"bootleg ground" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "bootleg",
        "3": "ground",
        "gloss1": "fake",
        "gloss2": "earthing"
      },
      "expansion": "bootleg (“fake”) + ground (“earthing”)",
      "name": "compound"
    }
  ],
  "etymology_text": "bootleg (“fake”) + ground (“earthing”)",
  "forms": [
    {
      "form": "bootleg grounds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bootleg ground (plural bootleg grounds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A type of false ground (earth) in electrical circuits, created by wiring the grounding circuit (green wire, bare copper wire) to the neutral circuit (cold wire, white wire)."
      ],
      "hypernyms": [
        {
          "word": "false ground"
        }
      ],
      "id": "en-bootleg_ground-en-noun-xPec-R0S",
      "raw_glosses": [
        "(US) A type of false ground (earth) in electrical circuits, created by wiring the grounding circuit (green wire, bare copper wire) to the neutral circuit (cold wire, white wire)."
      ],
      "tags": [
        "US"
      ],
      "translations": [
        {
          "code": "de",
          "lang": "German",
          "sense": "Translations",
          "word": "die klassische Nullung"
        }
      ],
      "wikipedia": [
        "en:bootleg ground"
      ]
    }
  ],
  "word": "bootleg ground"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "bootleg",
        "3": "ground",
        "gloss1": "fake",
        "gloss2": "earthing"
      },
      "expansion": "bootleg (“fake”) + ground (“earthing”)",
      "name": "compound"
    }
  ],
  "etymology_text": "bootleg (“fake”) + ground (“earthing”)",
  "forms": [
    {
      "form": "bootleg grounds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bootleg ground (plural bootleg grounds)",
      "name": "en-noun"
    }
  ],
  "hypernyms": [
    {
      "word": "false ground"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "American English",
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Translation table header lacks gloss"
      ],
      "glosses": [
        "A type of false ground (earth) in electrical circuits, created by wiring the grounding circuit (green wire, bare copper wire) to the neutral circuit (cold wire, white wire)."
      ],
      "raw_glosses": [
        "(US) A type of false ground (earth) in electrical circuits, created by wiring the grounding circuit (green wire, bare copper wire) to the neutral circuit (cold wire, white wire)."
      ],
      "tags": [
        "US"
      ],
      "wikipedia": [
        "en:bootleg ground"
      ]
    }
  ],
  "translations": [
    {
      "code": "de",
      "lang": "German",
      "sense": "Translations",
      "word": "die klassische Nullung"
    }
  ],
  "word": "bootleg ground"
}