Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Food, dishflapjackflap‧jack /ˈflæpdʒæk/ noun [countable] 1 British EnglishDFF a cake made of oats, sugar, syrup, and butter2 American EnglishDFF a pancakeOrigin flapjack (1600-1700) flap + the male name Jack ldoceonline.com