WordNet
n. the right to hold property; part of an ancient hierarchical system of holding lands [syn: tenure]
Wikipedia
In common law systems, land tenure is the legal regime in which land is owned by an individual, who is said to "hold" the land. The French verb "tenir" means "to hold" and "tenant" is the present participle of "tenir". The sovereign monarch, known as The Crown, held land in its own right. All private owners are either its tenants or sub-tenants. Tenure signifies the relationship between tenant and lord, not the relationship between tenant and land.
Over history, many different forms of land ownership, i.e., ways of owning land, have been established.
A landholder/landowner is a holder of the estate in land with considerable rights of ownership or, simply put, an owner of land.