English edit

Etymology edit

Outgrowth of the earlier idiom, to hit the sack, with possible influences from other senses of to sack (tackle, pillage, verb), and to sock (hit, slam, verb), providing an implication that sleep has been thrust upon a person.

Pronunciation edit

  • (file)

Verb edit

sack out (third-person singular simple present sacks out, present participle sacking out, simple past and past participle sacked out)

  1. (slang) To fall asleep, usually from implied exhaustion.
    The kids sacked out in the back seat before we made it home.

Synonyms edit

Translations edit

See also edit