go to bed

verb3

1. •
   To lie down to sleep, put oneself in one's bed.

   • I go to sleep at the same hour every night, no matter when I go to bed.
   • I think I'll just go to bed, it's bedtime for me.
2. •
   (euphemistic) To have sex; to go to have sex.

   • Has he ever been to bed with her?
3. •
   Of a newspaper: to finish being prepared for printing.

   • The army newspaper "went to bed" several hours before the civilian one, […] — 1949