Something that stands alone or by itself.
One who falls behind the rest, for example in a race.
Something that shoots, or spreads out, beyond the rest, or too far; an exuberant growth.
One who roams without any settled direction.
A roving vagabond.
A person who straggles, or departs from the direct or proper course, or from the company to which they belong.
A migratory animal found away from its usual range.