Definition

A small wheel that you can turn with your thumb to control a device or adjust settings.

Example

He adjusted the volume on the radio using the thumbwheel.

Conversation

Have you seen the new camera with the thumbwheel feature?

Yeah, it looks really cool!

I think that thumbwheel makes adjusting settings so much easier.

Definitely! It's much more convenient than using buttons.

Synonyms & Antonyms

Root Explanation

Thumbwheel → The word is formed from "thumb" (from Old English "þuma", meaning the short, thick digit on the hand) and "wheel" (from Old English "hwēol", meaning a circular object that revolves). A thumbwheel is a small wheel that is operated by the thumb.

Memory Tip

Think of using your 'thumb' to turn a 'wheel' — that's how a thumbwheel works.

Visually Confused Words