(uncountable) Any product of someone's intellect that has commercial value: a piece of literature, a painting, an invention, a trademark, a trade secret, etc. Works protected under intellectual property law, and accorded intellectual property rights such as copyrights and patents.

(law) The exclusive rights pertaining to the ownership and possession of a given piece of property.

Ownership that is not absolute and complete. / Property whose subject matter is by nature not permanent (as wild animals reduced to possession but not in captivity).

(law) the area of law concerned with the ownership and conveyance of property rights and title. / The formal course in property law required of most first-year law school students in common-law systems.

(informal) A genre of television programme or glossy magazine article showing desirable properties with luxurious interiors and idyllic locations. / (informal) Lusting after such properties.

Stolen goods. / Something that is highly sought after.

(law) real estate.

(Britain) The hierarchy of owned housing.

(mathematics) The property of there being a unique morphism from an arbitrary object to the universal morphism of a comma category which is from a functor to a fixed object; or, dually, the property of there being a unique morphism from the universal morphism to an arbitrary object of a comma category which is from a fixed object to a functor. (Caveat: the uniqueness is up to isomorphism.)

(law) Property that is found in such a state as to make it likely that the original owner intentionally placed it somewhere, but then forgot to retrieve it from that place, and would be able to locate the property.