to hit someone on the head, making them become unconscious or confused for a short timeverbjump to other results
NAmE//kənˈkʌs//concuss somebodyVerb Forms present simple I / you / we / they concuss
he / she / it concusses
past simple concussed
-ing form concussing
concussedjump to other results
adjective She was concussed after the fall.