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double block
noun
- a block having two sheaves or pulleys.
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Example Sentences
The captain of the Dazzler buckled on his pistol-belt, and placed a rifle and a stout double-block tackle in the boat.
At each boom a seaman stood, and each held the double block of a boom-tackle, waiting the word that now came.
The main-boom had a ring working between cheeks and carrying a double block with a single block below.
There were four, for it was a heavy boat, held by a double block.
The halyards should be a luff purchase, the fly-block being the double block, and the single block being hooked in the channels.
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