"jake brake" meaning in English

{
  "etymology_text": "From JakeBrake, an abbreviation for the Jacobs brand name of engine braking systems.",
  "forms": [
    {
      "form": "jake brakes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "jake brake"
      },
      "expansion": "jake brake (plural jake brakes)",
      "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",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English genericized trademarks",
          "parents": [
            "Genericized trademarks",
            "Terms by etymology",
            "Trademarks",
            "Terms by usage"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "word": "compression release engine brake"
        },
        {
          "word": "engine braking"
        }
      ],
      "glosses": [
        "Especially on trucks, an engine compression release braking system that opens the exhaust valves in each cylinder near the top of their compression strokes in order to slow the vehicle; an engine retarder."
      ],
      "id": "en-jake_brake-en-noun-aJd42okq",
      "links": [
        [
          "trucks",
          "trucks"
        ],
        [
          "engine",
          "engine"
        ],
        [
          "retarder",
          "retarder"
        ]
      ],
      "raw_glosses": [
        "(slang) Especially on trucks, an engine compression release braking system that opens the exhaust valves in each cylinder near the top of their compression strokes in order to slow the vehicle; an engine retarder."
      ],
      "related": [
        {
          "word": "brake"
        },
        {
          "word": "jake"
        },
        {
          "word": "Jake"
        }
      ],
      "synonyms": [
        {
          "word": "Jacobs brake"
        },
        {
          "word": "Jake brake"
        },
        {
          "word": "Jake Brake"
        },
        {
          "word": "jakebrake"
        },
        {
          "word": "JakeBrake"
        }
      ],
      "tags": [
        "slang"
      ],
      "translations": [
        {
          "code": "nl",
          "lang": "Dutch",
          "sense": "engine compression brake",
          "tags": [
            "masculine"
          ],
          "word": "motorrem"
        }
      ],
      "wikipedia": [
        "jake brake"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-jake brake.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/12/En-au-jake_brake.ogg/En-au-jake_brake.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/1/12/En-au-jake_brake.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "jake brake"
}

{
  "coordinate_terms": [
    {
      "word": "compression release engine brake"
    },
    {
      "word": "engine braking"
    }
  ],
  "etymology_text": "From JakeBrake, an abbreviation for the Jacobs brand name of engine braking systems.",
  "forms": [
    {
      "form": "jake brakes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "jake brake"
      },
      "expansion": "jake brake (plural jake brakes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "brake"
    },
    {
      "word": "jake"
    },
    {
      "word": "Jake"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English genericized trademarks",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English rhyming phrases",
        "English slang",
        "English terms with audio links",
        "English terms with non-redundant non-automated sortkeys"
      ],
      "glosses": [
        "Especially on trucks, an engine compression release braking system that opens the exhaust valves in each cylinder near the top of their compression strokes in order to slow the vehicle; an engine retarder."
      ],
      "links": [
        [
          "trucks",
          "trucks"
        ],
        [
          "engine",
          "engine"
        ],
        [
          "retarder",
          "retarder"
        ]
      ],
      "raw_glosses": [
        "(slang) Especially on trucks, an engine compression release braking system that opens the exhaust valves in each cylinder near the top of their compression strokes in order to slow the vehicle; an engine retarder."
      ],
      "tags": [
        "slang"
      ],
      "wikipedia": [
        "jake brake"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-jake brake.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/12/En-au-jake_brake.ogg/En-au-jake_brake.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/1/12/En-au-jake_brake.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "synonyms": [
    {
      "word": "Jacobs brake"
    },
    {
      "word": "Jake brake"
    },
    {
      "word": "Jake Brake"
    },
    {
      "word": "jakebrake"
    },
    {
      "word": "JakeBrake"
    }
  ],
  "translations": [
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "engine compression brake",
      "tags": [
        "masculine"
      ],
      "word": "motorrem"
    }
  ],
  "word": "jake brake"
}