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fly block

noun, Machinery, Nautical
1.
(in a Spanish burton or the like) a block, supported by a runner, through which the hauling part of the fall is rove.
2.
any block that shifts with the movement of its tackle.
Origin
1835-1845
1835-45
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Value for fly

9
9
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