>>18640791I think the most important thing is that you possess certain rights over a thing you own and these are mutually recognized. The rights differ from thing to thing of course.
This all depends on what the thing actually is.
Certain things you own will be recognized merely on your word, other things of a more serious nature may demand documentation and/or recognition by a governing body.
For instance, the title to a piece of property.
There are also different types of ownership depending on the relationship to the thing. A ship captain can be said to own the ship he commands in one respect, but also the line or navy to which it belongs can also be said to own it. The ownership is shared in a unique manner.
A father can be said to own his wife, and the parents can be said to own their children. This relationship differs from the way a master may own slaves.
If I could sum up a definition, I think it would be, "A special relationship between two beings, the superior of which be called "owner," in which the owner possesses certain rights over the second, that being dependent on the nature or circumstances of either being, which are mutually recognized by their community."
Not perfect but I could improve it.