saccades

Noun

saccade (plural saccades)

1. A rapid movement of the eye (either voluntary or involuntary) from one focus to another. (Often described as a jerky movement, but this word denotes all such quick eye movements, which happen continually, not just exaggerated or weird ones, and not nystagmus.)
   • He added the bill with a single saccade of his pulsing eyes.1993, Will Self, My Idea of Fun
2. The act of checking a horse quickly with a single strong pull of the reins.
3. The sounding of two violin strings together by using a sudden strong pressure of the bow.
4. (rare) Any sudden jerking movement.

See all 5 meanings of saccade