concussion

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A concussion is a type of brain injury that can happen when your head hits something or gets hit by something.

When someone suffers a concussion, it's usually because they've had some kind of accident, like falling down or getting into a car crash. It's also possible to get a concussion from sports injuries, especially if you play contact sports like football or hockey. If you hear that someone got a concussion playing soccer over the weekend, they might have gotten hit in the head by an opponent's elbow or boot. Concussions can make people feel dizzy and confused, and sometimes it takes time for them to get better.

How common is "concussion"?

Word concussion is considered rare in modern English.
It has a balanced usage among all categories: speech, fiction, newspapers and academic texts.

Definitions

noun

(obsolete, seismology) A violent collision or shock.
(uncountable in Commonwealth, countable in Canada, US) An injury to part of the body, most especially the brain, caused by a violent blow, followed by loss of function.
(obsolete, law) The unlawful forcing of another by threats of violence to yield up something of value.

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