depends on the piece of lead.
A very thick piece of metallic Lead(Pb)
A thick piece of wood is commonly referred to as a plank.
A thick piece of string is called a rope.
Identical to that of a piece of string, but not as thick.
chunk
A thick piece of wood is called a plank. It is a long, flat piece of wood that is often used in construction or woodworking projects.
Typically, cardboard is lass than 0.4 cm thick.
Lead is effective at stopping radiation when it is at least 1/4 inch thick.
slab
100 meters
Wha tis a thick piece of ice called?
A long piece of wood is often referred to as a "plank" or a "board."