脑震荡 nǎozhèndàng concussion Origin Definitions Defs Strokes Stroke Words Sentences Sents 脑 腦 nǎo noun brain The brain of a person or animal; the organ in the head that controls thought and movement.震荡 震蕩 zhèndàng noun to shake; shock to vibrate, shake, or shudder; can refer to physical shocks or social and economic instability