Wander away from the street light (5)
I believe the answer is:
stray
'wander away' is the definition.
(I've seen this in another clue)
'street light' is the wordplay.
'street' becomes 'st' (abbreviation).
'light' becomes 'ray' (ray is a kind of light).
'st'+'ray'='STRAY'
'from the' is the link.
(Other definitions for stray that I've seen before include "Wander from the path" , "Homeless cat" , "Vagrant" , "Wander; be unfaithful" , "Appearing occasionally" .)