/ Dictionary / Index H highball: Meaning and Definition of Find definitions for: high•ball Pronunciation: (hī'bôl"), [key] — n. a drink of whiskey mixed with club soda or ginger ale and served with ice in a tall glass. a signal to start a train, given with the hand or with a lamp. a signal for a train to move at full speed. a hand salute. —v.i. to move at full speed. —v.t. to signal to (the engineer of a train) to proceed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: highball (Thesaurus) high and mighty high bar Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language