Breadcrumb Home > Dictionary > Index O one-acter: Meaning and Definition of Find definitions for: one-act•er Pronunciation: (wun'ak'tur), [key] — n. Informal. a short play consisting of one act. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. one-a-cat one another TrendingHere are the facts and trivia that people are buzzing about. Ramadan and Eid al-Fitr 42 Best War Movie Quotes Current Events This Week: March 2023 Recycling Facts William Shakespeare Worst U.S. Forest Fires ✖ Related Content Daily Word Quiz: nonplus Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language