flap¹/flæp; flæp/ n 1 [C] a flat piece of material, that is fastened by one edge to a surface and hangs down loosely over something 片状垂悬物 2 be/get in a flapinformal to be very excited and worried about something 【非正式】 激动; 慌乱; 焦急: She's in a bit of a flap over moving house. 对于搬家，她有点慌乱。