Concussion1. (n.) A shaking; a violent shock or blow caused by the collision of two bodies or an explosion.
2. (n.) A condition of lowered functional activity, without visible structural change, produced in an organ by a shock, as by fall or blow; as, a concussion of the brain.
3. (n.) The unlawful forcing of another by threats of violence to yield up something of value.
Thesaurus Entries
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