concuss

 
Pronunciation: /kənˈkʌs/

verb

[with object] (usually as adjective concussed)
  • hit the head of (a person or animal), causing them to become temporarily unconscious or confused: Michael was a bit concussed

Derivatives

concussive

adjective

Origin:

late 16th century (in the sense 'shake violently'): from Latin concuss- 'dashed together, violently shaken', from the verb concutere, from con- 'together' + quatere 'shake'