deckful noun2 •The amount that comprises a deck (of cards).In contrast, Colonel Parmenter having graduated from Choate and West Point, and been a high-ranking Kansas City officer, Mrs. Parmenter sat there with an entire deckful of aces. — 2013 •The amount that a deck will hold.He was a whole deckful of loose cannons, rumbling this way and that with the pitch of every wave. — 1994 formsdeckfuls · decksful