round the clock noun 1prepositional phrase 1round-the-clock adjective 1 noun1 •A variant of the game of darts in which players attempt to hit each section of the dartboard sequentially, from lowest to highest number. prepositional phrase1 •Nonstop, 24 hours per day.He had his team work round the clock to get the project finished in time. round-the-clock adjective1 •Continuous; incessant; without interruption; all day long, 24 hours per day; nonstop: from the concept that it happens while the hands of the clock go all the way around.They are protected by round-the-clock guards.
