a drink of whiskey mixed with club soda or ginger ale and served with ice in a tall glass.

Railroads .

a signal to start a train, given with the hand or with a lamp.

a signal for a train to move at full speed.

Military Slang . a hand salute.

Slang . to move at full speed.

to signal to (the engineer of a train) to proceed.

verb

bolt , bucket , bustle , dart , dash , festinate , flash , fleet , flit , fly , haste , hasten , hurry , hustle , pelt , race , rocket , run , sail , scoot , scour , shoot , speed , sprint , tear , trot , whirl , whisk , whiz , wing , zip , zoom