Yerk

1.

A sudden or quick thrust or motion; a jerk.

1.

(TRANSITIVE) To throw or thrust with a sudden, smart movement; to kick or strike suddenly; to jerk.

2.

(TRANSITIVE) To strike or lash with a whip.

3.

(INTRANSITIVE) To throw out the heels; to kick; to jerk.

4.

(INTRANSITIVE) To move a quick, jerking motion.