Yerk

Webster's Dictionary of the English Language

·vt To strike or lash with a whip.

II. Yerk ·vi To move a quick, jerking motion.

III. Yerk ·noun A sudden or quick thrust or motion; a jerk.

IV. Yerk ·vi To throw out the heels; to Kick; to Jerk.

V. Yerk ·vt To throw or thrust with a sudden, smart movement; to kick or strike suddenly; to Jerk.