Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Drugs, medicinessleeping pillˈsleeping pill noun [countable] MDa pill which helps you to sleepExamples from the Corpussleeping pill• Nigel was given a sleeping pill and some cocoa before he went to bed.• I tell her I am tired and giddy from last night's sleeping pill. ldoceonline.com
