the.com/stray
A creature, thought, or bullet that wandered off the map of intent.
means To wander away from the proper course or place, or a being that has done so and now belongs to no one.
from From Old French estraier, to roam, rooted in Latin extra vagari — to wander beyond the bounds.
Legal lifeStray animals can become property of whoever claims them
Stray lightPhotographers curse it for ruining clean exposures
Range of meaningApplies to cats, bullets, and idle thoughts alike