set off a/the tripwire
(redirected from have set off the trip wire)set off a/the tripwire
To trigger some sort of alarm or protective measure, such as a booby trap. Watch your leg! You almost set off the trip wire! When Alan set off the trip wire, he narrowly escaped being crushed by a falling boulder.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.