How to sign: a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope
Similiar / Same: pulley, pulley-block
Categories: machine, simple machine
Within this category: bollock, fairlead, idle pulley
How to sign: a solid piece of something (usually having flat rectangular sides)
"the pyramids were built with large stone blocks";
Categories: artefact, artifact
Within this category: anvil, briquette, cake, chock, chopping block, crosshead, cube, domino, ingot, nog, nut, pad, slab, starting block, step, swage block, type
How to sign: (American football) the act of obstructing someone's path with your body
"he threw a rolling block into the line backer";
Similiar / Same: blocking, interference
Categories: obstruction
Within this category: trap block