"rush candle" meaning in English

{
  "forms": [
    {
      "form": "rush candles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rush candle (plural rush candles)",
      "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": "topical",
          "langcode": "en",
          "name": "Light sources",
          "orig": "en:Light sources",
          "parents": [
            "Light",
            "Energy",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A candle of tallow or wax that uses a piece of rush as a wick."
      ],
      "id": "en-rush_candle-en-noun-GT3lszMI",
      "links": [
        [
          "candle",
          "candle"
        ],
        [
          "tallow",
          "tallow"
        ],
        [
          "wax",
          "wax"
        ],
        [
          "rush",
          "rush"
        ],
        [
          "wick",
          "wick"
        ]
      ],
      "related": [
        {
          "word": "rushlight"
        }
      ]
    }
  ],
  "word": "rush candle"
}

{
  "forms": [
    {
      "form": "rush candles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rush candle (plural rush candles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "rushlight"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Light sources"
      ],
      "glosses": [
        "A candle of tallow or wax that uses a piece of rush as a wick."
      ],
      "links": [
        [
          "candle",
          "candle"
        ],
        [
          "tallow",
          "tallow"
        ],
        [
          "wax",
          "wax"
        ],
        [
          "rush",
          "rush"
        ],
        [
          "wick",
          "wick"
        ]
      ]
    }
  ],
  "word": "rush candle"
}