BLOCK

a large solid piece of hard material, especially rock, stone, or wood, typically with flat surfaces on each side

a large single building subdivided into separate rooms, flats, or offices

a large quantity or allocation of things regarded as a unit

an obstacle to the normal progress or functioning of something

a flat area of something, especially a solid area of colour

a pulley or system of pulleys mounted in a case

make the movement or flow in (a passage, pipe, road, etc.) difficult or impossible

impress text or a design on (a book cover).

shape or reshape (a hat) on a mould

design or plan the movements of actors on a stage or movie set.