'Concuss' definitions:

Definition of 'concuss'

From: WordNet
verb
Shake violently
verb
Injure the brain; sustain a concussion

Definition of 'Concuss'

From: GCIDE
  • Concuss \Con*cuss"\, v. t. [L. concussus, p. p. of concutere. See Concussion.]
  • 1. To shake or agitate. "Concussed with uncertainty." --Daniel. [1913 Webster]
  • 2. (Law) To force (a person) to do something, or give up something, by intimidation; to coerce. --Wharton. [1913 Webster]