WordNet
trip line
n. a light rope used in lumbering to free a dog hook from a log at a distance
Usage examples of "trip line".
Hanna got as far as the tree line before, amazingly, she tripped over that same damned trip line that had caught her in the first place.
A trip line here, a disguised patch of slick mud on a corner there.
She tied a very short trip line to the trigger peg, too, then set the trigger into the anchor peg.