- a lead from an electric apparatus to the earth or to a ground connection.
Origin of ground wire
First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ground wire
I've been thinking over that wireless proposition of yours, and I've got a hunch that your ground-wire isn't anchored right.Motor Matt; or, The King of the Wheel
Stanley R. Matthews
Then, to the ends of the copper wire of the main coil fasten two wires,—one for the line, the other for the "ground-wire."
Our line was tapped on to the battery (without changing any of its connections) twenty cells from the ground-wire.Electricity and Magnetism