An abrupt call, such as made by the California Quail.
To move the body in a sexually suggestive twisting or gyrating fashion.
To dance in a sexually suggestive manner, often involving rapid movement.
The definition of twerk is to move your bottom in a rhythmic, repetitive motion while bending over and dancing.
An example of twerk is to make a YouTube video where you quickly move your backend to look sexy while bending over and dancing.
To twitch or jerk.