Definitions of floater:

• noun:   an insurance policy covering loss of movable property (e.g. jewelry) regardless of its location
• noun:   an object that floats or is capable of floating
• noun:   a swimmer who floats in the water
• noun:   a voter who votes illegally at different polling places in the same election
• noun:   an employee who is reassigned from job to job as needed
• noun:   a debt instrument with a variable interest rate tied to some other interest rate (e.g. the rate paid by T-bills)
• noun:   a wanderer who has no established residence or visible means of support
• noun:   spots before the eyes caused by opaque cell fragments in the vitreous humor and lens