sharkskin
/ˈʃɑːkskɪn/noun
mass noun
1- the rough scaly skin of a shark, sometimes used as shagreen鲨鱼皮, 鲨革（有时用作擦光物）。
1.1
- a stiff, slightly lustrous synthetic fabric鲨皮呢（一种硬而挺的略带光泽的合成织物）。