- A current-carrying coil of wire that acts like a magnet when a current passes through it. (noun)
- An assembly used as a switch, consisting of a coil and a metal core free to slide along the coil axis under the influence of the magnetic field. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.