/ˈrəʊlə(r) ||; ˈrolɚ/noun[C] 1 a piece of equipment or part of a machine that is shaped like a tube and used, for example, to make sth flat or to help sth move 滚轴；滚筒: a roller blind on a window 窗上的卷帘
2 [usu.pl] a small plastic tube that you roll hair around in order to make the hair curly 卷发筒；发卷