backlash

From back +‎ lash.

• IPA^(key): /ˈbækˌlæʃ/

• Audio (US)

  (file)

backlash (countable and uncountable, plural backlashes)

1. A sudden backward motion.
2. (figurative) A negative reaction, objection or outcry, especially of a violent or abrupt nature.

   The public backlash to the proposal was quick and insistent.

3. (mechanics) The looseness through which one part of connected machinery, as a wheel, gear, piston, or screw, can be moved without moving the connected parts, or a measurement of the distance moved thereby; either intentional (as allowance) or unintentional (from error or wear).

   Synonyms: lash, play

4. The jarring or reflex motion caused in badly fitting machinery by irregularities in velocity or a reverse of motion.

• techlash

backlash (third-person singular simple present backlashes, present participle backlashing, simple past and past participle backlashed)

1. To cause or set off a backlash.

   (The addition of quotations indicative of this usage is being sought:)

• Kalbachs, black ash, hacklabs