- trip wire - a small military force that serves as a first line of defense; if they become engaged in hostilities it will trigger the intervention of stronger military forces
--1 is a kind of military unit, military force, military group, force
- trip wire - a wire stretched close to the ground that activates something (a trap or camera or weapon) when tripped over
--2 is a kind of wire
- trip wire - a wire stretched close to the ground that activates something (a trap or camera or weapon) when tripped over