An extension cord is the long cable that brings power to plugs far from the wall. Run an extension cord.
It must be fully unwound on a reel, because a coiled one gets hot enough to melt. An extension cord plugged into another extension cord is how most of them fail.
1nounextension cordThe long cable that brings power to plugs far from the wall.
“The extension cord ran all the way down the garden.”
extension cord is a cable.
Also accepted in games: extension lead
Practised in Around the House