寝 (w)

(qǐn) to lie down

寝室 (w)

(qǐnshì) bedroom; dormitory; CL:間|间[jian1]

寝苫枕块 (w)

(qǐnshānzhěnkuài) bed of straw and pillow of clay (idiom); the correct etiquette for filial son during Confucian mourning period

寝食难安 (w)

(qǐnshínánān) lit. cannot rest or eat in peace (idiom); fig. extremely worried and troubled