from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A sudden or violent backward whipping motion.
- n. An antagonistic reaction to a trend, development, or event: "As the backlash against divorce progressed, state legislatures . . . called for a rollback of no-fault divorce laws and even for premarital waiting periods” ( Walter Kirn).
- n. A snarl formed in the part of a fishing line that is wound around the reel.
- n. The play resulting from loose connections between gears or other mechanical elements.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A sudden backward motion.
- n. A reaction, objection or outcry, especially of a violent or abrupt nature.
- n. The distance through which one part of connected machinery, as a wheel, piston, or screw, can be moved without moving the connected parts, resulting from looseness in fitting or from wear.
- n. The jarring or reflex motion caused in badly fitting machinery by irregularities in velocity or a reverse of motion.
- v. : To cause or set off a backlash.
from the GNU version of the Collaborative International Dictionary of English
- n. The distance through which one part of connected machinery, as a wheel, piston, or screw, can be moved without moving the connected parts, resulting from looseness in fitting or from wear; also, the jarring or reflex motion caused in badly fitting machinery by irregularities in velocity or a reverse of motion.
- n. A strong and sudden reverse movement in a moving part of a machine.
- n. A strong popular reaction serving to counter the effect of an action; -- used especially of adverse reactions to social or political developments.
from The Century Dictionary and Cyclopedia
- n. In mech., the jarring reaction of each of a pair of wheels upon the other, produced by irregularities of velocity when the load is not constant or the moving power is not uniform.
- n. In coal-mining, the backward suction of the air-current after an explosion of fire-damp.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a movement back from an impact
- v. come back to the originator of an action with an undesired effect
- n. an adverse reaction to some political or social occurrence
From back + lash. (Wiktionary)