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.
1 Normally, the two eyes point in the same direction. 2  A âsquintâ or âstrabismusâ occurs when the two eyes are misaligned. 3  This can happen in either eye and the misalignment can be in any direction. 4  A squint may occur for a number of reasons. 5  Sometimes, one or more of the muscles that move the eyes is in the wrong place. This can happen in either eye and the misalignment can be in any direction. 2  A squint may occur for a number of reasons. 3  Sometimes, one or more of the muscles that move the eyes is in the wrong place. 4  Sometimes the muscles do not work as they should.