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.
Exotropia is a common type of strabismus that occurs when misaligned eyes deviate outward. Exotropia (also known as wall-eye or divergent strabismus) differs from its opposite form, esotropia (eye turns in toward nose), in that exotropic eyes point outward or away from the nose. Exotropia can occur in one or both eyes.