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
roller/ˋrolɚ; ˈrəʊlə/n [C] 1 a tube-shaped piece of wood, metal etc that can be rolled over and over, used for painting, crushing etc〔用于油漆﹑碾轧等的〕碾子﹐滚筒﹐滚轴: a paint roller 刷漆滚筒2 a small plastic or metal tube used for making hair curl 卷发夹