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trip wire

noun

Definition of trip wire

  1. 1 :  a low-placed concealed wire used especially in warfare to trip an enemy or trespasser and usually to trigger an alarm or explosive device when moved

  2. 2 :  something (as a small military force) intended to function like a trip wire (as to set a larger military force in motion)



1915

First Known Use of trip wire

1915


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