針金 (harigane) means “wire” | MotiTan Japanese Dictionary

More examples

壊れた柵を針金で固定します。kowa re ta saku o hari gane de ko tei shi ma su

I secure the broken fence with wire.

It is metal drawn into a narrow, flexible form that can be shaped to join, hold, or carry something.

ワイヤーwaiyā: A flexible metal strand used to support weight, secure objects, or operate a mechanism.

金属を細く延ばして、ひも状にしたもの。kin zoku o hoso ku no ba shi te hi mo jō ni shi ta mo no

針金 (harigane) is a compound of 針 (hari, "needle") and 金 (gane, "metal"), describing metal made into a needle-like line.

Electric wire is often called wire even when its metal core is covered with plastic, so wire does not always mean bare metal.