pillowcases From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsnounA washable, easily removable cloth cover for pillows. Related wordsSynonymspillowslipslipcasepillow slippillowspillowbedclothesbedsheetsbed linenblanketscoverletsbedlinenbedspreadsthrow pillowcushionsmattressescomforter References Wiktionary — pillowcases Wikipedia — pillowcases