"bench bleeder" meaning in English

{
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    {
      "args": {
        "1": "en",
        "2": "bench bleed",
        "3": "er",
        "id2": "agent noun"
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      "expansion": "bench bleed + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From bench bleed + -er.",
  "forms": [
    {
      "form": "bench bleeders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {},
      "expansion": "bench bleeder (plural bench bleeders)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
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          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Engineering",
          "orig": "en:Engineering",
          "parents": [
            "Applied sciences",
            "Technology",
            "Sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "A device that removes air from the system to assist with bench bleeding."
      ],
      "id": "en-bench_bleeder-en-noun-I1RHYNEC",
      "links": [
        [
          "engineering",
          "engineering#Noun"
        ],
        [
          "bench bleeding",
          "bench bleed#English"
        ]
      ],
      "raw_glosses": [
        "(engineering, rare) A device that removes air from the system to assist with bench bleeding."
      ],
      "tags": [
        "rare"
      ],
      "topics": [
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "bench bleeder"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "bench bleed",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "bench bleed + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From bench bleed + -er.",
  "forms": [
    {
      "form": "bench bleeders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bench bleeder (plural bench bleeders)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms suffixed with -er (agent noun)",
        "English terms with rare senses",
        "en:Engineering"
      ],
      "glosses": [
        "A device that removes air from the system to assist with bench bleeding."
      ],
      "links": [
        [
          "engineering",
          "engineering#Noun"
        ],
        [
          "bench bleeding",
          "bench bleed#English"
        ]
      ],
      "raw_glosses": [
        "(engineering, rare) A device that removes air from the system to assist with bench bleeding."
      ],
      "tags": [
        "rare"
      ],
      "topics": [
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "bench bleeder"
}