An afternoon rest or sleep (6)
I believe the answer is:
siesta
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">an afternoon rest</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">sleep</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for siesta that I've seen before include "rest of the Spaniards" , "A mid-day nap in Spain" , "Spanish afternoon nap" , "Afternoon nap in a warm climate" , "Rest in the heat of the day" .)