floater

(noun) spots before the eyes caused by opaque cell fragments in the vitreous humor and lens. Synonyms: musca volitans, muscae volitantes, spots. Examples: "Floaters seem to drift through the field of vision."

(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. Synonyms: vagrant, drifter, vagabond.

(noun) an employee who is reassigned from job to job as needed.

(noun) a voter who votes illegally at different polling places in the same election.

(noun) a swimmer who floats in the water.

(noun) an object that floats or is capable of floating.

(noun) an insurance policy covering loss of movable property (e.g. jewelry) regardless of its location. Synonyms: floating policy.