a jet aircraft, especially a large one, capable of supersonic flight.
noun 1. an ocean liner of relatively great size or speed. 2. a railroad car or train providing express service and usually deluxe passenger accommodations.
noun 1. another name for live load
noun 1. (informal) an automated public toilet
[soo-per-loo-muh-nl] /ˌsu pərˈlu mə nl/ adjective, Astronomy. 1. appearing to travel faster than the speed of light. superluminal /ˌsuːpəˈluːmɪnəl/ adjective 1. (physics) of or relating to a speed or velocity exceeding the speed of light