concussionKK [kəˋnkʌʃən] /kəˈnkʌʃən/名詞1腦震盪醫學He suffered a concussion after falling off his bike.他從腳踏車上摔下來後得了腦震盪。2震盪、衝擊正式The concussion from the blast shattered windows across the street.爆炸的衝擊震碎了對街的窗戶。