Rest/rest/ Definition 1 of 5Pro Tip 1/3Recharging Necessary Rest here implies the need to recharge energy or mental resources. After studying all week, she deserved a day of rest. Pro Tip 2/3Not Sleeping Rest doesn't always mean sleep—it can be any relaxing activity. He took a rest on the couch with his favorite book. Pro Tip 3/3Work Interruption Rest suggests a temporary halt in work or activity. The workers took a brief rest to regain their strength.