Something owned; a possession. A piece of real estate: has a swimming pool on the property. Something tangible or intangible to which its owner has legal title: properties such as copyrights and trademarks. Possessions considered as a group. The right of ownership; title. An article, except costumes and scenery, that appears on the stage or on screen during a dramatic performance. A characteristic trait or peculiarity, especially one serving to define or describe its possessor. A characteristic attribute possessed by all members of a class. See Synonyms at quality. A special capability or power; a virtue: the chemical properties of a metal.