1 to suffer from insomnia

1 eternal

2 everlasting

3 fig. to pass into eternity (i.e. to die)

1 forever

2 eternal

1 sleep

2 to sleep

3 (computing) to enter sleep mode

1 hypnosis

1 without stopping to sleep or have a rest (idiom)

1 lit. I'm drunk and would like to sleep (idiom)

2 (used to indicate one's sincere and straightforward nature)

1 lit. to live and sleep together (idiom); fig. a close friendship