Definitions

1. noun

A person who runs, especially as a form of exercise or sport.

“She is a marathon runner and has completed several races.”

2. noun

A person who delivers or conveys something, especially quickly or over a long distance.

“The delivery runner brought the package to our doorstep within an hour.”

3. noun

A vehicle, especially a car or motorcycle, designed for speed or racing.

“The sports car was a high-performance runner on the track.”

4. verb

To move quickly or rapidly, especially on foot.

“The kids were running around the playground, laughing and shouting.”