definition of the word jerk

• IPA: /ʤɜ:k/
•  Audio (US)^{help, file}
• Rhymes: -ɜː(r)k

Possibly from Middle English yerk (“‘sudden motion’”)

jerk (plural jerks)

1. A sudden, often uncontrolled movement, especially of the body.
2. A quick, often unpleasant tug or shake.

   When I yell "OK," give the mooring line a good jerk!

3. (US, slang, pejorative) A person with unlikable or obnoxious qualities and behavior, typically mean, self-centered or disagreeable, and often not very intelligent.

   I finally fired him, because he was being a real jerk to his customers, even to some of the staff.

   You really are a jerk sometimes.

4. (physics, engineering) The rate of change in acceleration with respect to time.

Wikipedia has an article on:

Jerk

Wikipedia

• Jerk is measured in metres per second cubed (m/s³) in SI units , or in feet per second cubed (ft/s³) in imperial units.

• (sudden movement): jolt, lurch, jump
• (quick tug): yank
• (unlikable person): asshole, bastard.
• (physics, change in acceleration): jolt (UK), surge, lurch

• acceleration
• displacement
• velocity

Definition from Wiktionary Content avaible with GNU Free Documentation License

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