Definition

A device made of a wheel with a groove around its edge, used to lift heavy objects by changing the direction of a rope or chain that runs through it.

Example

The workers used a pulley to lift the heavy box to the top of the building.

Conversation

Have you ever seen how a pulley works?

Yeah, I remember using one in science class to lift weights.

It's fascinating how it can make lifting so much easier!

Definitely! I love how simple machines can change things.

Synonyms & Antonyms

Root Explanation

Pulley → The word 'pulley' originates from the Old French 'polie', which means a wheel or a pulley. It refers to a wheel used to change the direction of a force applied to a rope or cable.

Memory Tip

Think of a 'wheel' ('polie') that helps you lift things by changing the direction of the force.

Visually Confused Words