うたた寝
うたたね · utatane · JLPT N1 · noun
napping
🛏️ うたた寝 = うたた (half-conscious, fleeting) + 寝 (sleep): a light, brief nap
うたた is an old adverb meaning half-conscious or in a fleeting state. Added to 寝 (sleep), it names the light, brief doze you fall into while sitting or lying down.