Definitions

1. noun

A large, swift game bird of the New World, especially the Greater Roadrunner (Geococcyx californianus) or the Lesser Roadrunner (Geococcyx velatus).

“The desert traveler spotted a roadrunner crossing the highway.”

2. noun

A type of fast-moving delivery service, especially one that uses trucks or other vehicles to transport goods.

“The company is known for its efficient roadrunner delivery service.”