"heavy roller" meaning in English

{
  "forms": [
    {
      "form": "heavy rollers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "heavy roller (plural heavy rollers)",
      "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": "Cricket",
          "orig": "en:Cricket",
          "parents": [
            "Ball games",
            "Sports",
            "Human activity",
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2003, David Mortimer, Classic Cricket Clangers, page 179",
          "text": "Thommo pointed out on the radio that under normal circumstances the wicket retains moisture beneath a hard surface, and this water is brought to the surface by the heavy roller and causes problems on the first day of a game.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The heavier of the rollers used for flattening the pitch between innings."
      ],
      "id": "en-heavy_roller-en-noun-ylnYgXwL",
      "links": [
        [
          "cricket",
          "cricket"
        ],
        [
          "heavier",
          "heavier"
        ],
        [
          "roller",
          "roller"
        ],
        [
          "flattening",
          "flattening"
        ],
        [
          "pitch",
          "pitch"
        ],
        [
          "innings",
          "innings"
        ]
      ],
      "raw_glosses": [
        "(cricket) The heavier of the rollers used for flattening the pitch between innings."
      ],
      "related": [
        {
          "word": "light roller"
        }
      ],
      "topics": [
        "ball-games",
        "cricket",
        "games",
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-heavy roller.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/57/En-au-heavy_roller.ogg/En-au-heavy_roller.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/5/57/En-au-heavy_roller.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "heavy roller"
}

{
  "forms": [
    {
      "form": "heavy rollers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "heavy roller (plural heavy rollers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "light roller"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with audio links",
        "English terms with quotations",
        "Quotation templates to be cleaned",
        "en:Cricket"
      ],
      "examples": [
        {
          "ref": "2003, David Mortimer, Classic Cricket Clangers, page 179",
          "text": "Thommo pointed out on the radio that under normal circumstances the wicket retains moisture beneath a hard surface, and this water is brought to the surface by the heavy roller and causes problems on the first day of a game.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The heavier of the rollers used for flattening the pitch between innings."
      ],
      "links": [
        [
          "cricket",
          "cricket"
        ],
        [
          "heavier",
          "heavier"
        ],
        [
          "roller",
          "roller"
        ],
        [
          "flattening",
          "flattening"
        ],
        [
          "pitch",
          "pitch"
        ],
        [
          "innings",
          "innings"
        ]
      ],
      "raw_glosses": [
        "(cricket) The heavier of the rollers used for flattening the pitch between innings."
      ],
      "topics": [
        "ball-games",
        "cricket",
        "games",
        "hobbies",
        "lifestyle",
        "sports"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-heavy roller.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/57/En-au-heavy_roller.ogg/En-au-heavy_roller.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/5/57/En-au-heavy_roller.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "heavy roller"
}