noun. 1  a. An old French dance resembling the gavotte, usually in 3/4 or 2/2 time beginning with an upbeat. 2  A movement in ballet in which the dancer transfers body weight quickly from foot to foot, usually on the balls of the feet, in a series of small steps.
Nystagmus is a condition where the eyes make repetitive movements. The eyes can jerk exclusively in one direction, or make back and forth movements. With nystagmus, the eye can look jittery and can affect both eyes or just one eye.
Persistent, rapid, rhythmical, jerky or wobbling movement of the eyes, usually together. The movement is usually transverse and most commonly of a âsawtoothâ pattern with a slow movement in one direction followed by a sudden recovery jerk in the other.