SLAPJACK Meaning of SLAPJACK in English [slap.jack] n [ [2]slap + -jack (as in flapjack)] (1796) 1: pancake 2: a card game in which each player tries to be the first to slap a hand on any jack that appears faceup Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012