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fly block

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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 of fly block

First recorded in 1835–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for fly block

Historical Examples

  • The block secured to the lower end of the tye is the fly-block.

    The Sailor's Word-Book

    William Henry Smyth

  • Luck is like a fly-block and its yard: when one goes up, the other comes down.

    The Red Rover

    James Fenimore Cooper

  • The halyards should be a luff purchase, the fly-block being the double block, and the single block being hooked in the channels.

    The Seaman's Friend

    Richard Henry Dana

  • Reeve the end of your rope through the upper block, and make it fast to the strap of the fly-block.

    The Seaman's Friend

    Richard Henry Dana

  • Then make fast your hook to the bight of the rope, and reeve the other end through the fly-block for a fall.

    The Seaman's Friend

    Richard Henry Dana