"step grate" meaning in English

{
  "forms": [
    {
      "form": "step grates",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "step grate (plural step grates)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
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          "kind": "other",
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          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              211,
              221
            ]
          ],
          "ref": "1893 March 5, Charles Hanford Henderson, “The Development of American Industries Since Columbus: The Glass Industry II”, in Popular Science Monthly, volume 42:",
          "text": "These are modifications of the Siemens regenerative furnace, but differ from it in having the gas generator directly alongside of the melting chamber instead of at a distance. The coal is burned on the ordinary step-grate to carbon-monoxide gas which passes while still hot directly to the combustion area.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A form of grate for holding fuel, in which the bars rise above one another in the manner of steps."
      ],
      "id": "en-step_grate-en-noun-db~0Zlbp",
      "links": [
        [
          "grate",
          "grate"
        ],
        [
          "fuel",
          "fuel"
        ],
        [
          "bar",
          "bar"
        ],
        [
          "step",
          "step"
        ]
      ]
    }
  ],
  "word": "step grate"
}

{
  "forms": [
    {
      "form": "step grates",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "step grate (plural step grates)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              211,
              221
            ]
          ],
          "ref": "1893 March 5, Charles Hanford Henderson, “The Development of American Industries Since Columbus: The Glass Industry II”, in Popular Science Monthly, volume 42:",
          "text": "These are modifications of the Siemens regenerative furnace, but differ from it in having the gas generator directly alongside of the melting chamber instead of at a distance. The coal is burned on the ordinary step-grate to carbon-monoxide gas which passes while still hot directly to the combustion area.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A form of grate for holding fuel, in which the bars rise above one another in the manner of steps."
      ],
      "links": [
        [
          "grate",
          "grate"
        ],
        [
          "fuel",
          "fuel"
        ],
        [
          "bar",
          "bar"
        ],
        [
          "step",
          "step"
        ]
      ]
    }
  ],
  "word": "step grate"
}