noun, takes する, intransitive verb

Messages.euph.
  1. eternal sleep, eternal rest, passing away, death.

Variations

Pronunciation Kanji Kana Is Common
永眠 えいみん

Contained Kanji Breakdown

eternity, long, lengthy
エイ なが.い え (5th, N2)
dot, tick or dot radical (no. 3)
チュ (Kentei 1)
water
みず スイ み (1st, N5)
sleep, die, sleepy
ねむ.る ミン ね (7th, N3)
eye, class, look
め モク ボク (1st, N4)
people, nation, subjects
ミン たみ ひと (4th, N3)
family name, surname, clan
シ うじ (4th, N1)