Значение

значений: 1
  1. (идиома, без степеней сравнения)Sound asleep, usually from a healthy exhaustion.

    The kids are sacked out in the back seat.

Происхождение

Outgrowth of the earlier idiom, to hit the sack (“to lie down to sleep”), with possible in

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

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