a length of rope, hair, or wire, arranged into a series of circles, one above or outside the other

A coil of rope lay on the beach. 海滩上放着一卷绳子。

A coil of thick blue smoke rose up from his pipe. 一圈蓝色的浓烟从他的烟斗里冒了出来。

a twisted length of wire through which an electric current travels

an IUD (= a medical device to stop a woman becoming pregnant)

to arrange something in a coil

She coiled her hair into a neat bun on top of her head. 她把头发在头顶挽成一个利落的发髻。

The snake coiled itself tightly around the deer. 蛇紧紧地把鹿缠绕住。