any spring of wire coiled helically, having a cylindrical or conical outline.
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Origin of coil spring
First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for coil spring
A coil-spring makes the index fly back to the starting-point, when the power is relaxed at each indication of a character or word.The Humbugs of the World|P. T. Barnum
British Dictionary definitions for coil spring
a helical spring formed from wire
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012