A small block (block, n. 2a) used to raise and lower the topgallant yards, and (perhaps) to send up the jackstaff.
| 单词 | θ206220 |
| 释义 | society > travel > travel by water > vessel, ship, or boat > equipment of vessel > tackle or purchase > [noun] > system of) pulley(s) > for raising or lowering yards (1) jack block1794 A small block (block, n. 2a) used to raise and lower the topgallant yards, and (perhaps) to send up the jackstaff. |
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