1. a tall drink made with whiskey or another spirit mixed with soda water or ginger ale, served with ice
2. a railroad signal indicating that a train may proceed at full speed
Usage: railroad terminology

1. to travel at high speed
Usage: informal

Examples

• He ordered a whiskey highball at the bar.
• The bartender served the highball in a tall glass with plenty of ice.
• The engineer saw the highball signal and increased the train’s speed.
• The freight train got the highball to proceed through the junction.
• We highballed down the highway to make it to the concert on time.
• The delivery truck was highballing through the desert.
• She mixed a perfect bourbon highball for her guest.