jerk1
  
  n.
   - a quick, sharp, sudden movement.
- Weightlifting  the raising of a barbell above the head from shoulder level by an abrupt straightening of the arms and legs.
- informal a contemptibly foolish person.
v.
    - move with a jerk.
- Weightlifting  raise (a barbell) with a jerk.
- 
(jerk someone around)
 N. Amer. informal deal with someone dishonestly or unfairly.
- 
(jerk off)
 vulgar slang, chiefly N. Amer. masturbate.
Derivative
  
  Etymology
  C16 (denoting a stroke with a whip): prob. imitative.
 
  
    
jerk2
  
  v.
 
[
usu. as adj. jerked]
  
- cure (meat) by cutting it into strips and drying it.
- prepare (pork or chicken) by marinating it in spices and barbecuing it over a wood fire.
n.
 jerked meat.
Etymology
  C18: from Latin Amer. Sp. charquear, from charqui, from Quechua echarqui ‘dried flesh’.