柯林斯詞典castor /?kɑ?st?/ →see caster 1. N the brownish aromatic secretion of the anal glands of a beaver, used in perfumery and medicine 海貍香 返回 castor劍橋詞典a small wheel , usually one of a set, that is attached to the bottom of a piece of furniture so that it can be moved easily （家具底部的）小腳輪，萬(wàn)曏輪 返回 castor