sack out

Idioms and Phrases

Go to sleep, go to bed, as in We sacked out about midnight . This slangy idiom is a verbal use of the noun sack , slang for “bed” since about 1940; it alludes to a sleeping bag and appears in such similar phrases as in the sack , in bed, and sack time , bedtime.

Related Words

• bed down
• doze
• fall asleep
• languish
• relax
• snooze