any block that alters the direction of a rope; fairlead.
Origin of lead block
First recorded in 1855–60
Also called leading block.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for lead block
Historical Examples of lead block
The four reactor cores in their lead cases went aboard last and were packed inside a pile of lead-block shielding.The Lani People
J. F. Bone