Telegraph guy? (5)
I believe the answer is:
cable
I believe this clue is a double definition.
'telegraph' is the first definition.
(I know this)
'guy?' is the second definition.
(I've seen this in other clues)
(Other definitions for cable that I've seen before include "Anchor chain; type of TV" , "This may pull car up" , "Telegram; wire rope" , "Thick wire; telegram" , "Conductor for transmitting electric power" .)