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.

校对:凯特