Longman Dictionary of Contemporary English
extension lead
noun
EXAMPLES FROM CORPUS
▪ A very short length of cable is supplied with the machine, and this proved annoying unless an extension lead was used.
▪ Connection to the electricity supply should be via a weatherproof cable connector to the extension lead.
▪ I bought an extension lead for the aerial point.
▪ The pictures are gone off the walls-a kettle on a long extension lead is on the bare table behind.
▪ The socket of course was out of reach, but again the case provided an extension lead.
▪ You ask for an extension lead.
Usage examples of "extension lead".
He had toyed with the idea of simply running an extension lead to the nearest available wall socket but this was too limiting to his movements.
An extension lead still had to be found for the disco, a bulb was needed for the outside light, and Caitlin still hadn't written out large cards to show people where the loos were and where to hang their coats.
The attentive steward bustled out on deck with the instrument on an extension lead.