1. injury to the brain caused by a blow
; usually resulting in loss of consciousness
2. any violent blow
The Collaborative International Dictionary of English v.0.48:
Concussion \Con*cus"sion\, n. [L. concussio, fr. concutere,
concussum, to shake violenty; con- + quatere to shake. See
1. A shaking or agitation; a shock; caused by the collision
of two bodies.
It is believed that great ringing of bells, in
populous cities, hath dissipated pestilent air;
which may be from the concussion of the air.
2. (Med.) A condition of lowered functional activity, without
visible structural change, produced in an organ by a
shock, as by fall or blow; as, a concussion of the brain.
3. (Civil Law) The unlawful forcing of another by threats of
violence to yield up something of value.
Then concussion, rapine, pilleries,
Their catalogue of accusations fill. --Daniel.
Concussion fuse (Mil.), one that is ignited by the
concussion of the shell when it strikes.
Syn: See Shock.
WordNet (r) 3.0 (2006):
n 1: injury to the brain caused by a blow; usually resulting in
loss of consciousness
2: any violent blow
Moby Thesaurus II by Grady Ward, 1.0:
88 Moby Thesaurus words for "concussion":
abrasion, appulse, beating, blemish, blow, break, brunt, buffeting,
bulldozing, bulling, bump, burn, cannon, carambole, carom, chafe,
check, chip, clash, clip, clout, collision, crack, crack-up,
crackle, crash, craze, crump, crunch, cut, encounter, flash burn,
fracture, fray, frazzle, gall, gash, hammering, hurt, impact,
impingement, incision, injury, jar, jarring, jolt, jolting,
laceration, lesion, mauling, meeting, mortal wound, mutilation,
onslaught, percussion, pounding, puncture, ramming, rent,
repercussion, rip, run, rupture, scald, scorch, scrape, scratch,
scuff, second-degree burn, shaking, shock, sideswipe, slash,
sledgehammering, smash, smash-up, smashing, sore, stab, stab wound,
tear, third-degree burn, thrusting, trauma, whomp, wound,
wounds immedicable, wrench
Bouvier's Law Dictionary, Revised 6th Ed (1856):
CONCUSSION, civ. law. The unlawful forcing of another by threats of violence
to give something of value. It differs from robbery in this, that in robbery
the thing is taken by force, while in concussion it is obtained by
threatened violence. Hein. Lec. El, Sec. 1071