concuss
/kənˈkʌs/verb
with obj.［usu. as adj. concussed］
- hit the head of (a person or animal), causing them to become temporarily unconscious or confused击打（人, 动物的）头部以使暂时失去知觉（或神志不清）：
Michael was a bit concussed.
迈克尔被打得有点神志不清。
派生词
concussive
adjective词源
late 16th cent. （in the sense 'shake violently'）： from Latin concuss- 'dashed together， violently shaken'， from the verb concutere, from con- 'together'+quatere 'shake'.