1. Godan verb with 'ru' ending, Intransitive verb

   to sleep

   see 寝る

   もし眠るといけないので目覚し時計をセットしなさい。

2. to die; to rest (in peace); to lie (buried); to sleep (in the grave)

3. to lie idle (e.g. of resources); to lie unused; to lie untapped; to lie untouched

4. to close one's eyes

   Archaic

Also written 睡る【ねむる】nemuru