Hang about (6)
I believe the answer is:
loiter
'hang about' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for loiter that I've seen before include "Hang around, perhaps with intent" , "Hang around furtively" , "Linger - lurk" , "Dawdle, hang around" , "Linger, with intent perhaps" .)