"top-block" meaning in English

{
  "forms": [
    {
      "form": "top-blocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "top-block (plural top-blocks)",
      "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"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nautical",
          "orig": "en:Nautical",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1819, Darcy Lever, The Young Sea Officer's Sheet Anchor:",
          "text": "Underneath this Cap are Eye - bolts (b) , on each side : one is for the top Block, and the foremost one for the Fore Lift Block to hook to",
          "type": "quote"
        }
      ],
      "glosses": [
        "A large ironbound block strapped with a hook, and, when used, hung to an eyebolt in the cap, used in swaying and lowering the topmast."
      ],
      "id": "en-top-block-en-noun-W7bqb4SJ",
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "ironbound",
          "ironbound"
        ],
        [
          "block",
          "block"
        ],
        [
          "hook",
          "hook"
        ],
        [
          "eyebolt",
          "eyebolt"
        ],
        [
          "cap",
          "cap"
        ],
        [
          "sway",
          "sway"
        ],
        [
          "lower",
          "lower"
        ],
        [
          "topmast",
          "topmast"
        ]
      ],
      "raw_glosses": [
        "(nautical) A large ironbound block strapped with a hook, and, when used, hung to an eyebolt in the cap, used in swaying and lowering the topmast."
      ],
      "topics": [
        "nautical",
        "transport"
      ]
    }
  ],
  "word": "top-block"
}

{
  "forms": [
    {
      "form": "top-blocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "top-block (plural top-blocks)",
      "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",
        "en:Nautical"
      ],
      "examples": [
        {
          "ref": "1819, Darcy Lever, The Young Sea Officer's Sheet Anchor:",
          "text": "Underneath this Cap are Eye - bolts (b) , on each side : one is for the top Block, and the foremost one for the Fore Lift Block to hook to",
          "type": "quote"
        }
      ],
      "glosses": [
        "A large ironbound block strapped with a hook, and, when used, hung to an eyebolt in the cap, used in swaying and lowering the topmast."
      ],
      "links": [
        [
          "nautical",
          "nautical"
        ],
        [
          "ironbound",
          "ironbound"
        ],
        [
          "block",
          "block"
        ],
        [
          "hook",
          "hook"
        ],
        [
          "eyebolt",
          "eyebolt"
        ],
        [
          "cap",
          "cap"
        ],
        [
          "sway",
          "sway"
        ],
        [
          "lower",
          "lower"
        ],
        [
          "topmast",
          "topmast"
        ]
      ],
      "raw_glosses": [
        "(nautical) A large ironbound block strapped with a hook, and, when used, hung to an eyebolt in the cap, used in swaying and lowering the topmast."
      ],
      "topics": [
        "nautical",
        "transport"
      ]
    }
  ],
  "word": "top-block"
}