jumperwire

noun
UK /ˈdʒʌmpə waɪə/
US /ˈdʒʌmpər waɪər/

A jumper wire is a short wire that connects two points in a circuit.

He used a jumper wire to connect the battery to the small motor.


OTHER MEANINGS

2. A short wire used to bypass a broken connection or complete a circuit temporarily.

The mechanic used a jumper wire to bypass the faulty switch.

3. A wire used to start a car by connecting its battery to another battery.

She grabbed a jumper wire from the trunk to start the dead car.

4. A small wire used in sewing or crafts to join two pieces temporarily.

The tailor used a jumper wire to hold the fabric in place.