electricitytester
nounUK /ɪˌlɛkˈtrɪsɪti ˈtɛstə/
US /ɪˌlɛkˈtrɪsəti ˈtɛstər/
A tool that tells you if electricity is there.
The electrician used an electricity tester to check the wall socket.
RELATED WORDS
OTHER MEANINGS
2. A small screwdriver-like device that lights up when it touches a live wire.
He touched the wire with the electricity tester and the little bulb glowed.
3. A device used to check whether a battery still has power.
She used an electricity tester to see if the old battery was dead.
4. Any instrument that checks the safety of an electrical connection.
Before starting work, the technician ran the electricity tester over every cable.