block

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

block

How to sign: hinder or prevent the progress or accomplishment of
"His brother blocked him at every turn";

Similiar / Same: obstruct, blockade, stymie, stymy, hinder, embarrass

Categories: forbid, foreclose, forestall, preclude, prevent

Within this category: bottleneck, check, filibuster, hang, stonewall

block

How to sign: a metal casting containing the cylinders and cooling ducts of an engine
"the engine had to be replaced because the block was cracked";

Similiar / Same: engine block, cylinder block

Categories: cast, casting

block

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

block

How to sign: be unable to remember
"I'm drawing a blank"; "You are blocking the name of your first wife!";

Similiar / Same: blank out, draw a blank, forget

Within this category: slip