Track circuits (4)
I believe the answer is:
laps
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">track circuits</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for laps that I've seen before include "Circuits of track" , "Scoops up with the tongue" , "Drinks; circuits" , "Pals doing rounds of the track" , "Circuits of a racetrack" .)