American English

Definition of concuss verb from the Oxford Advanced American Dictionary



concuss somebodyVerb Forms present simple I / you / we / they concuss
he / she / it concusses
past simple concussed
-ing form concussing
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to hit someone on the head, making them become unconscious or confused for a short time
adjective She was concussed after the fall.
See the Oxford Advanced Learner's Dictionary entry: concuss