"Smith machine" meaning in English

{
  "etymology_text": "Named after Rudy Smith, who commissioned improvements to the original design.",
  "forms": [
    {
      "form": "Smith machines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Smith machine (plural Smith machines)",
      "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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A machine used for weight training, consisting of a barbell (sometimes counterbalanced) fixed within rails allowing only vertical or near-vertical movement."
      ],
      "id": "en-Smith_machine-en-noun-rq2kbtTJ",
      "links": [
        [
          "machine",
          "machine"
        ],
        [
          "weight training",
          "weight training"
        ],
        [
          "barbell",
          "barbell"
        ],
        [
          "counterbalanced",
          "counterbalanced"
        ],
        [
          "rail",
          "rail"
        ],
        [
          "vertical",
          "vertical"
        ]
      ]
    }
  ],
  "word": "Smith machine"
}

{
  "etymology_text": "Named after Rudy Smith, who commissioned improvements to the original design.",
  "forms": [
    {
      "form": "Smith machines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Smith machine (plural Smith machines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "A machine used for weight training, consisting of a barbell (sometimes counterbalanced) fixed within rails allowing only vertical or near-vertical movement."
      ],
      "links": [
        [
          "machine",
          "machine"
        ],
        [
          "weight training",
          "weight training"
        ],
        [
          "barbell",
          "barbell"
        ],
        [
          "counterbalanced",
          "counterbalanced"
        ],
        [
          "rail",
          "rail"
        ],
        [
          "vertical",
          "vertical"
        ]
      ]
    }
  ],
  "word": "Smith machine"
}