Some z's in Zaragoza (6)
I believe the answer is:
siesta
'some z's in zaragoza' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for siesta that I've seen before include "PM snooze" , "A mid-day nap in Spain" , "Catnap" , "Early afternoon nap" , "Afternoon break" .)