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tr.v. con·cussed, con·cuss·ing, con·cuss·es
To injure by concussion: "a middle-aged woman concussed by a blow on the head" (Manchester Guardian Weekly).
1. (Pathology) to injure (the brain) by a violent blow, fall, etc
2. to shake violently; agitate; disturb
[C16: from Latin concussus violently shaken, from concutere to disturb greatly, from quatere to shake]
to injure or affect by concussion.
[1590–1600; < Latin concussus, past participle of concutere=con- con- + -cutere, comb. form of quatere to shake]
Past participle: concussed