"Coffey still" meaning in English

{
  "etymology_text": "Patented in 1830 by Aeneas Coffey of Ireland.",
  "forms": [
    {
      "form": "Coffey stills",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Coffey still (plural Coffey stills)",
      "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 terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A two-column continuous distillation apparatus."
      ],
      "id": "en-Coffey_still-en-noun-7VJmyxPs",
      "links": [
        [
          "column",
          "column"
        ],
        [
          "continuous",
          "continuous"
        ],
        [
          "distillation",
          "distillation"
        ],
        [
          "apparatus",
          "apparatus"
        ]
      ],
      "synonyms": [
        {
          "word": "column still"
        }
      ]
    }
  ],
  "word": "Coffey still"
}

{
  "etymology_text": "Patented in 1830 by Aeneas Coffey of Ireland.",
  "forms": [
    {
      "form": "Coffey stills",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Coffey still (plural Coffey stills)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys"
      ],
      "glosses": [
        "A two-column continuous distillation apparatus."
      ],
      "links": [
        [
          "column",
          "column"
        ],
        [
          "continuous",
          "continuous"
        ],
        [
          "distillation",
          "distillation"
        ],
        [
          "apparatus",
          "apparatus"
        ]
      ],
      "synonyms": [
        {
          "word": "column still"
        }
      ]
    }
  ],
  "word": "Coffey still"
}