/kənˈkʌs ||; kənˈkʌs/verb [T] (usually passive 通常用于被动语态) to injure sb's brain by hitting his/her head 使脑震荡；使脑震伤: I was slightly concussed when I fell off my bicycle. 我从自行车上摔下来，脑部受了轻微震荡。 ➔concussion /kənˈkʌʃn ||; kənˈkʌʃən/ noun [U]