on deck

[on deck] {adv.} or {adj. phr.} 1. On a floor of a ship open to theoutdoors.

The passengers were playing shufflehoard on deck.

Thesailors kept busy cleaning and painting on deck.

2. {informal} Readyto do something; present.

The scout leader told the boys to be ondeck at 8:00 Saturday morning for the hike.

Dick was at bat, andBob was on deck.