(亦作caster)
1
- each of a set of small wheels, free to swivel in any direction, fixed to the legs or base of a heavy piece of furniture so that it can be moved easily（笨重家具的）小脚轮, 自位轮。
2
- a small container with holes in the top, especially one used for sprinkling sugar or pepper调味品瓶（尤指用来撒糖或胡椒粉的容器, 顶部有孔）。
词源
late 17th cent. (in sense 2)： originally a variant of CASTER, in the general sense 'something that casts'.