noun
- a small wheel or disk that can be rotated with the thumb to control a device or adjust a setting
Examples
- She used the thumbwheel on her radio to adjust the volume.
- The camera’s thumbwheel allows for quick exposure adjustments.
- Turn the thumbwheel clockwise to increase the brightness.
- The old calculator had a thumbwheel for scrolling through numbers.
- He rotated the thumbwheel to fine-tune the telescope’s focus.
- The device’s thumbwheel provides precise control over the settings.