Verb
1. pull, or move with a sudden movement;
"He turned the handle and jerked the door open"2. move with abrupt, seemingly uncontrolled motions;
"The patient's legs were jerkings"3. make an uncontrolled, short, jerky motion;
"his face is twitching"4. jump vertically, with legs stiff and back arched;
"the yung filly bucked"5. throw or toss with a quick motion;
"flick a piece of paper across the table""jerk his head"