Home › Words › P › pillowcasepillowcase/ˈpɪləʊˌkeɪs/pillowcase means A washable, easily removable cloth cover for pillows.Among words judged in Lexicurio's Arena, pillowcase ranks #12,418 of 42,749 for Qualifying.pillowcase is pronounced /ˈpɪləʊˌkeɪs/.EtymologyFrom pillow + case.nounA washable, easily removable cloth cover for pillows.Definitions & examples from Wiktionary (CC BY-SA 3.0).