Street light (8)
I believe the answer is:
lamppost
'street light' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for lamppost that I've seen before include "Street furniture on which George Formby would lean in song" , "Pillar for street light" , "Support for public illumination" , "Street light (on which George Formby leant?)" , "Street feature" .)