Wiktionary
trip cord
n. 1 A cord, line, lanyard, or wire that, when pulled, mechanically activates a device. 2 A type of electrical extension cord: see pad.
Usage examples of "trip cord".
Spreading the loop, she affixed a chunk of oatcake to the trip cord and lay it on the snow in the center of the loop.
Almost immediately Craer bent low with his dagger and slashed a trip cord.