°A substantial, often approximately
cuboid, piece of any substance.
°A cuboid of wood, plastic or other material used as a
base on which to cut something.
"Anne Boleyn placed her head on the block and awaited her execution."
verb
°To fill (something) so that it is not possible to pass.
"The pipe is blocked."
°To prevent (something or someone) from passing.
"You're blocking the road - I can't get through."