In 'Merican, we call it hittin' the sack. Catchin' sum zees. Sawin' lumber. You know. 'Merican words.

Haryu mochit' - lit. "to wet the mug (face)".  To sleep.

Side note - harya is an extremely rude word for one's face.  There are less rude but still crude ones - morda and rozha, which can be used affectionately (e.g. "youse mugs" or "it's good to see your ugly mug") -  but harya is downright offensive.  Mochit' - to wet or to make wet - often means to kill or get rid of.  How "killing one's mug" become a synonym for going to sleep is completely beyond me.