Webster's Revised Unabridged Dictionary · 1913

Concuss

Concuss , transitive verb

[Latin concussus, past participle 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