Definition of yerk

• v. t. - To throw or thrust with a sudden, smart movement; to kick or strike suddenly; to jerk.
• v. t. - To strike or lash with a whip.
• v. i. - To throw out the heels; to kick; to jerk.
• v. i. - To move a quick, jerking motion.
• n. - A sudden or quick thrust or motion; a jerk.