Coil  —v. 1 arrange or be arranged in spirals or concentric rings. 2 move sinuously. —n. 1 coiled arrangement. 2 coiled length of rope etc. 3 single turn of something coiled. 4 flexible loop as a contraceptive device in the womb. 5 coiled wire for the passage of an electric current and acting as an inductor. [latin: related to *collect1]