Noun
A kind of ballpoint pen with a spherical nib that uses water-based liquid or gelled ink.
(computing) A trackball.
Source: en.wiktionary.orgRollerball is an incoherent mess, a jumble of footage in search of plot, meaning, rhythm and sense. There are bright colors and quick movement on the screen, which we can watch as a visual pattern that, in entertainment value, falls somewhere between a kaleidoscope and a lava lamp. Roger Ebert
Rollerball (2002) Sports and the cinema have long enjoyed a successful marriage. Source: Internet