WordNet
dispatch rider
n. a messenger who carries military dispatches (usually on a motorcycle)
Usage examples of "dispatch rider".
A dispatch rider pulled up in a spray of gravel, his dog's tongue hanging loose.
She should have realized who he was, for she had heard he had become a dispatch rider and scout for General Crook.
Every so often the party was forced to make way for a military dispatch rider, his straining mount throwing off flecks of foam.