interrupteur
light switch
noun ahn-teh-roop-TUR Rare
Origin: Latin 'interruptus' (broken between)
Usage Note
Interrupteur specifically means an electrical switch for lighting, not a power button (which is bouton d'alimentation). The feminine agent noun interruptrice exists but is rare; in electronics, interrupteur can also refer to any circuit breaker or toggle switch.
Examples
"Appuie sur l'interrupteur pour allumer la lumière."
Natural Translation
Press the light switch to turn on the light.

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