speed demon

American  

noun

Informal.

1. a person who travels or works at high speed.

---

Example Sentences

No one else on the gridiron was big enough or fast enough to guard a 6-foot-5 speed demon whose leaps defied gravity.

From The Wall Street Journal

Along the right sideline, the Rams had left wide receiver and resident speed demon Rashid Shaheed in single coverage.

From The Wall Street Journal

McDonald developed the little speed demon, helping him go from a 7-year-old who could barely shoot or dribble to a major college prospect under her guidance with the Compton Magic club team.

From Los Angeles Times

Another rant to the speed demons that weave through pedestrian traffic as fast as they can go.

From Seattle Times

Guarding is generally crazy, especially if you are keeping an eye on an energetic speed demon named Natalie.

From Seattle Times