trip wire   (TTS Sound)

The trip_wire has 2 Senses.

• 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
• 防御の第一線として機能する小さい軍事力

• trip wire
• a wire stretched close to the ground that activates something (a trap or camera or weapon) when tripped over
• 地面近くまで伸びた針金で、外れると何か（罠、カメラまたは兵器）を始動させる