# trackball

/ˈtɹækˌbɔɫ/ (US) · CEFR B2 · Noun

Source: https://englishreference.com/word/trackball
Updated: 2026-07-22

## Definition

a computer mouse that stays in one place. You move the cursor by rolling a ball on top with your fingers or thumb.

For teachers: a computer pointing device consisting of a ball housed in a socket containing sensors to detect rotation. Unlike a standard mouse, the unit remains stationary while the user manipulates the ball directly.

## Examples

- I prefer using a trackball because it takes up less desk space.
- Graphic designers often choose a trackball to reduce wrist strain during long hours of precise editing work.
- While the optical mouse became the industry standard for general computing, the trackball remains a preferred interface in specialized environments like air traffic control and industrial workstations.

## Usage notes

- Often used as a compound noun; can be used as a modifier before other nouns like 'mouse' or 'controller'.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.