軽けい四よんFreq.FrequencyTop 100,000Meanings1nounfour-wheeled light vehicle; kei carabbreviationAbbreviation of 軽四輪 (けいよんりん). Refers to a four-wheeled light motor vehicle under Japanese regulations, commonly called a kei car. Used in casual conversation and some official contexts.See also: 軽四輪軽けい四よんの税ぜい金きんは普ふ通つう車しゃより安やすい。The tax for kei cars is cheaper than for regular cars.保ほ険けんの書