- [uncountable, countable] (British English)
a thick soft biscuit made from oats, butter, sugar and syrup 燕麦甜饼 - [countable] (North American English)
a thick pancake 煎饼；烤饼
Word Originearly 17th cent. (in sense (2)): from flap (in the dialect sense ‘toss a pancake’) + jack; sense 1 dates from the 1930s and is probably a regional coinage.