Jerk·ing n. The act of pulling, pushing, or throwing, with a jerk. -- Jerk*ing*ly, adv.
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  Jerk, v. t.  [imp. & p. p. Jerked p. pr. & vb. n. Jerking.]
  1.  To beat; to strike. [Obs.]
  2.  To give a quick and suddenly arrested thrust, push, pull, or twist, to; to yerk; as, to jerk one with the elbow; to jerk a coat off.
  3.  To throw with a quick and suddenly arrested motion of the hand; as, to jerk a stone.
  jerking
       adj : not having a steady rhythm; "an arrhythmic heartbeat" [syn:
             arrhythmic, jerky, unsteady]
       n : an abrupt spasmodic movement [syn: jerk, jolt]