Zip around (4)
I believe the answer is:
flit
'zip around' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for flit that I've seen before include "Dart - elope" , "Secret departure (by moonlight?)" , "Fly quietly and dartingly" , "Travel lightly and quickly" , "Fly rapidly and lightly" .)