shear legs
A form of derrick, consisting of three poles and a block and tackle, used to hoist and…A form of derrick, consisting of three poles and a block and tackle, used to hoist and lower heavy weights, especially the masts of sailing ships.
Meaning
1 senses(uncountable)A form of derrick, consisting of three poles and a block and tackle, used to hoist and lower heavy weights, especially the masts of sailing ships.