/ Dictionary / Index A act warning: Meaning and Definition of Find definitions for: act' warn"ing Pronunciation: [key] — Theat. Theat. notification from the manager advising the performers of the amount of time left before they must appear onstage. See(def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. actuator acuate Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language