concuss

Từ điển American Heritage Dictionary 4th

con·cuss (kən-kŭsʹ)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).  [Latin concutere, concuss-, to strike together : com-, com- + quatere, to strike; See kwēt- in Indo-European Roots.]