Definition - What does Fixture mean?
A fixture is something attached to real property in a manner that makes it inalienable from the real property.
Generally, there are two types of property: real property and personal property. A fixture is something that before it was attached to real property is usually considered personal property, but through attaching it to real property, it becomes part of that real property.
Justipedia explains Fixture
A fixture is most often at issue between the buyer and seller of real property. For example, a shed might be built onto a piece of land, and the seller of the piece of land wants to transport the shed away from the land after selling it. A buyer may be able to compel the seller of the land to leave the shed if the buyer can successfully argue that the shed is a fixture, and properly considered part of the land.