floater

noun

• 1a person or thing that floats.
• a loose particle within the eyeball which is apparent in one’s field of vision.

• 2a floating voter.
• informal, chiefly North American a person who frequently changes occupation or residence.
• North American a worker who is required to do a variety of tasks as the need for each arises.

• 3British informal, dated a mistake; a gaffe.

• 4US an insurance policy covering loss of articles without specifying a location.