One who departs or flees at night in order to avoid creditors, law enforcement etc.
A traveling businessman or tradesman.
A creature which flies at night; a nocturnal flier or traveler.
A person or business that appears and/or disappears rapidly, appearing untrustworthy, or giving an impression of transience.
A voter etc. who has not yet come to a decision.
Uncommitted, not having reached a decision.
Open and not yet settled or determined.