concuss

[kuh n-kuhs] /kənˈkʌs/
verb (used with object)
1.
to injure by concussion:
He was mildly concussed by the falling books.
Origin
1590-1600; < Latin concussus, past participle of concutere, equivalent to con- con- + -cut-, combining form of quat-, stem of quatere to shake + -tus past participle ending
British Dictionary definitions for concuss

concuss

/kənˈkʌs/
verb (transitive)
1.
to injure (the brain) by a violent blow, fall, etc
2.
to shake violently; agitate; disturb
Word Origin
C16: from Latin concussus violently shaken, from concutere to disturb greatly, from quatere to shake
Word Origin and History for concuss
v.

1590s, "to shake violently," from Latin concuss-, past participle stem of concutere "to dash together, shake violently" (see concussion). Meaning "to give a concussion to the brain" is from 1680s. Related: Concussed; concussing; concussive.