Definitions
1.nounA sudden jerking movement.
2.nounA rapid jerky movement of the eye (voluntary or involuntary) from one focus to another.
3.nounThe act of checking a horse quickly with a single strong pull of the reins.
4.nounThe sounding of two violin strings together by using a sudden strong pressure of the bow.
5.verb(of the eye) To make a rapid jerking movement to focus elsewhere.