gyrobus

== English == === Etymology === From gyro- (“spinning motion”) +‎ bus. === Noun === gyrobus (plural gyrobuses) (historical) An electric bus which stores energy in a flywheel rotating at high speeds (up to 3000 RPM) rather than batteries. (science fiction) A flying bus. === References === Jesse Sheidlower, editor (2001–2026), “gyrobus, n.”, in Historical Dictionary of Science Fiction.