|
|
 |
|
|
|
|
| block and tack·le (plural blocks and tack·les) |
noun |
|
| Definition: |
| |
pulley system: a system of two pulley blocks, each with at least one pulley with rope or cable threaded through, used for hoisting or hauling. The greater the number of pulleys, the greater the weight that can be raised by the same force on the rope or cable.
|
|
|
|
