hit the deck Definition

deck¹
noun

1. A platform extending from one side of a ship to the other, and forming a floor or covering.
2. A floor or platform in a bus, bridge, etc.
(N Amer, especially US)
3. A pack of playing-cards.
4. The part of a tape recorder or computer which contains the mechanism for operation.
5. The unit that contains the turntable and pick-up of a record player.

Idiom: clear the decks

To clear away obstacles or deal with preliminary jobs in preparation for further activity.

Idiom: hit the deck

To lie or fall down suddenly and quickly on the ground or floor.
Thesaurus: duck, fall down, throw oneself down, lay down.

To get out of bed.
Thesaurus: get up, get out of bed, rise and shine, get ready, get moving, act.

To go into action.

Etymology: 15c: from Dutch dec roof or covering.