Level 6 · word 18,098 of 20,000 ruckus /ˈrʌkəs/ American n. 喧闹, 骚动 Definitionn. a noisy commotion or disturbanceExampleThe dog caused a ruckus when it chased the mailman.那只狗追赶邮递员时闹出了一场骚动。