What does "tripwire" mean?

A cord or wire arranged so that when snagged or pulled by an intruder, it will trigger a detector or trap or a device, such as a land mine.

What is a synonym for "tripwire"?

Common synonyms include: trip cord, trip cord, tripline, tripline.

noun, verb

noun, verb ·Rare ·Advanced level

Noun

1
A cord or wire arranged so that when snagged or pulled by an intruder, it will trigger a detector or trap or a device, such as a land mine.
"Seeing the tripwire of a nearby bouncing Betty gave us cold chills, and we moved all the more slowly through the woods."
2
Any means of detecting intruders or attackers. figuratively
"The continued presence of U.S. troops as a tripwire force in Macedonia is an increasingly risky venture."