寐る[neru] to lie down
寐坊[nebou] sleeping in late
昼寐[hirune] siesta

夢寐[mubi] asleep
寐竜[meiron] mei long (dinosaur discovered in China)
寐語[bigo] sleep-talking

御寝小[onesho] bed-wetting
ぐうぐう寝ちゃう[guuguunechau] to fall sound asleep
一寝入り[hitoneiri] nap
一人寝[hitorine] sleeping alone
仮寝[karine] siesta

果報は寝て待て[kahouhanetemate] All things come to those who wait
泣き寝入り[nakineiri] crying oneself to sleep
居間兼寝室[imakenshinshitsu] living room and bedroom
共寝[tomone] sleeping together
就寝[shuushin] going to bed