Definition of "drowsiness" [drow•si•ness]

• State of being drowsy. (noun)

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• "Only likely problem is drowsiness, which is indeed happening."
• "For Samoa, his drowsiness was the drowsiness of one beat on sleep, come dreams or death."
• "Lead author Fabio Cirignotta, M.D., professor of neurology at the University of Bologna in Italy, said that the only effective countermeasure to drowsiness is to stop driving immediately, pull over to a safe place and nap for 10 to15 minutes."