Webster’s Revised Unabridged Dictionary · 1913
Concuss
Con·cuss′ (kŏn·kŭs′), v. t. [L. concussus, p. p. of concutere. See Concussion.] 1. To shake or agitate. "Concussed with uncertainty." Daniel.
2. (Law) To force (a person) to do something, or give up something, by intimidation; to coerce. Wharton.