battlefront; live wire; hot wire
Meanings
2 senses · 7 examplesnoun
battlefront; front line; firing line
formalMilitary term for the area where opposing forces directly confront each other.
The soldiers were urgently dispatched to the battlefront.
The commander personally inspected the front line.
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The journalist reported from the firing line at great personal risk.
noun
live wire; hot wire; phase wire
technicalElectrical engineering term. The live/hot wire carries current from the power source. In AC mains, it is the wire with a high voltage relative to ground (neutral). In DC circuits, it is the wire connected to the positive terminal.
Before wiring, you must use a voltage tester to confirm which wire is the live wire.
When installing an outlet, the hot wire is usually connected to the right-side hole.
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Never touch a bare live wire directly.
In DC circuits, the red wire usually represents the hot wire (positive).