Space BALL is a game that was popular in the 1980s. It is a type of pinball game where players use a joystick to control a metal BALL and try to score points by hitting targets on the playfield. The term SPACE BALL is an acronym for the game, which stands for 'Spin, Push, Aim, Catch, Bounce, And Launch'. The crossword solution ORB is a three-letter word meaning a round or spherical object. Therefore, the term SPACE BALL can be defined as a pinball game where players use a joystick to control a metal BALL and try to score points by hitting targets on the playfield.