Napkin's perch (3)
I believe the answer is:
lap
(Other definitions for lap that I've seen before include "Track circuit; drink" , "revolution" , "Once around the course" , "Single circuit of track" , "Circuit of racetrack" .)
I believe the answer is:
lap
(Other definitions for lap that I've seen before include "Track circuit; drink" , "revolution" , "Once around the course" , "Single circuit of track" , "Circuit of racetrack" .)