A mechanism consisting of ropes and one or more pulley-blocks, used for lifting or pulling heavy objects.
- We have bent a number of bows using a steam box and a jig with a block and tackle and pulleys to bend them around a form.
- There was clearly no time to rig a block and tackle to winch the casualty on board.
- A block and tackle can contain as many pulleys as you like, although at some point the amount of friction in the pulley shafts begins to become a significant source of resistance.
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Syllabification: block and tack·le
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