昼寝, 昼寐, ひるね
Takes suru, Intransitive
(afternoon) nap, sleeping during the day, siesta
私はよく日曜日に昼寝をしたものだった。
盗人の昼寝, ぬすびとのひるね
Expression, Proverb
there's a reason behind every action, a burglar's midday nap (is taken so that he can rob people's houses in the night)