Meaning : Prepare for sleep.
Example :
I usually turn in at midnight.
He goes to bed at the crack of dawn.
Synonyms : bed, crawl in, go to bed, go to sleep, hit the hay, kip down, retire, sack out, turn in
Hit the sack ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Marathi. Hit the sack ka matlab kya hota hai?