"underfeeder" meaning in English

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        "3": "feeder"
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      "expansion": "under- + feeder",
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      "args": {
        "1": "en",
        "2": "underfeed",
        "3": "er",
        "id2": "agent noun"
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      "expansion": "underfeed + -er",
      "name": "suf"
    }
  ],
  "etymology_text": "From under- + feeder or underfeed + -er.",
  "forms": [
    {
      "form": "underfeeders",
      "tags": [
        "plural"
      ]
    }
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      "expansion": "underfeeder (plural underfeeders)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "orig": "en:Engineering",
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            "Technology",
            "Sciences",
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            "Fundamental"
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      "examples": [
        {
          "ref": "1890, The Review of Reviews, volume 2, page 29:",
          "text": "He speaks well of Andrews' Helix Underfeeder, by which the fire is always fed from below.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A device that feeds in material from below."
      ],
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      "raw_glosses": [
        "(engineering) A device that feeds in material from below."
      ],
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        "engineering",
        "natural-sciences",
        "physical-sciences"
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  "word": "underfeeder"
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      "args": {
        "1": "en",
        "2": "underfeed",
        "3": "er",
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      "expansion": "underfeed + -er",
      "name": "suf"
    }
  ],
  "etymology_text": "From under- + feeder or underfeed + -er.",
  "forms": [
    {
      "form": "underfeeders",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "underfeeder (plural underfeeders)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A device that feeds in material from below."
      ],
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        "(engineering) A device that feeds in material from below."
      ],
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        "engineering",
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