(retronym) an indoor racket sport from which the modern game of tennis (lawn tennis) is descended

The realm of human experience comprising physical objects, and excluding theoretical constructs, hypotheses, artificial environments, and "virtual" worlds such as the Internet, computer simulations, or the imagination.

Alternative form of real-world

(mathematics) The real number system, viewed as a line.

As happens in real life; not fictional or theoretical; actual as opposed to believed or assumed.

(theology) The actual presence of Christ's body and blood in the Eucharistic sacrament.

(literally) An authentic bargain. / (idiomatic) A beneficial result or favorable state-of-affairs.

Property that cannot easily be moved, usually buildings and the ground they are built on. / (informal) Space used for a particular purpose.

plural of real number

(mathematics) The smallest set containing all limits of convergent sequences of rational numbers.