Noun

• S: (n) jerk, dork (a dull stupid fatuous person)
• S: (n) jerk, jerking, jolt, saccade (an abrupt spasmodic movement)
• S: (n) jerk ((mechanics) the rate of change of acceleration)
• S: (n) jerky, jerked meat, jerk (meat (especially beef) cut in strips and dried in the sun)
• S: (n) jerk (raising a weight from shoulder height to above the head by straightening the arms)
• S: (n) tug, jerk (a sudden abrupt pull)

Verb

• S: (v) yank, jerk (pull, or move with a sudden movement) "He turned the handle and jerked the door open"
• S: (v) jerk, twitch (move with abrupt, seemingly uncontrolled motions) "The patient's legs were jerkings"
• S: (v) twitch, jerk (make an uncontrolled, short, jerky motion) "his face is twitching"
• S: (v) buck, jerk, hitch (jump vertically, with legs stiff and back arched) "the yung filly bucked"
• S: (v) jerk, flick (throw or toss with a quick motion) "flick a piece of paper across the table"; "jerk his head"