Cable tower (5)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
pylon
'cable tower' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for pylon that I've seen before include "Bearer of cable" , "Tower supporting power lines" , "Power cable support" , "Grid cable support" , "power supplier?" .)