trip wire

Other forms: trip wires

Definitions of trip wire
  1. noun
    a wire stretched close to the ground that activates something (a trap or camera or weapon) when tripped over
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    type of:
    wire
    ligament made of metal and used to fasten things or make cages or fences etc
  2. noun
    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
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    type of:
    force, military force, military group, military unit
    a unit that is part of some military service
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