Indy circuit (3)
I believe the answer is:
lap
'indy circuit' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lap that I've seen before include "Round in a race" , "Circuit (of a race track)" , "Scoop up with the tongue" , "One round of the track" , "Single circuit of track" .)