piping
noun uk/ˈpaɪ.pɪŋ/ us/ˈpaɪ.pɪŋ/
(DECORATION)
[ C or U ]（衣服或家具的）滚边
a narrow strip of cloth used to decorate the edges of clothes or furniture
[ U ]（蛋糕上的）裱花
narrow lines of icing (= covering made with sugar) or cream, used to decorate a cake
(TUBE)
[ U ]管道（系统）
pipes in general or a particular system of pipes