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If something concusses you, it hits your head hard enough that your brain is shaken inside. You may lose consciousness for a short time, or stay awake but feel sick, , confused, or unlike yourself. Doctors call the injury a concussion: harm from that shaking, not always a break you can see on a bone. In real English, the passive is very common: she was concussed; he got concussed in the match. You will hear it in sports, accident reports, and hospital talk more than in ordinary chat. Though actually, the blow does not have to knock you fully out. Feeling sick, seeing stars, or losing the next few minutes can still mean you were concussed — which is why coaches now treat head knocks more carefully than older players remember. The verb itself sounds medical and a little formal; friends often say they banged their head, or they have a concussion. Do not use concuss for a or an emotional shock that never hit the head. That is a different kind of “shaken.”
使腦震盪；造成腦震盪
組成From Latin concussus, the perfect passive participle of concutiō (“shake violently”), from con- + quatiō (“shake, hit”).
同家族的字
- concussionthe head injury you get when you are concussed
原始詞典資料2 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
concussverb/kənˈkʌs/
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To injure the brain of, usually temporarily, by violent impact.
- The blow will concuss him.
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lawTo force to do something, or give up something, by intimidation; to coerce.
- The opposite principle , or rather the opposite practice of intrusion , is the reverse of this : it consists in concussing the Presbytery to ordain , and in concussing the people to receive.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。