What is the meaning of jerky?

noun

• Meat (especially beef) cut in strips and dried in the sun.
  • synonyms: jerked meat, jerk

adjective

• Lacking a steady rhythm.
  • usage: "an arrhythmic heartbeat"
  • synonyms: arrhythmic, jerking
• Marked by abrupt transitions.
  • usage: "choppy prose"
  • synonyms: choppy
• Having or revealing stupidity.
  • usage: "ridiculous anserine behavior"; "a dopey answer"; "a dopey kid"; "some fool idea about rewriting authors' books"
  • synonyms: anserine, dopy, dopey, foolish, goosey, goosy, gooselike