spinny /ˈspɪ.ni/adjective 1noun 1forms 3 adjective1 •(informal) Associated with spinning; moving with a spinning motion.The sound at contact should be solid and crisp, not “spinny.” — 1997 noun[in the plural]1 •(slang) Synonym of hard drive.I always turned it off when I had spinnies. Bearings wear the most when you change rotational speed. If you keep the rotational speed constant, they last a very very long time. — 2023 formsspinnies · spinnier · spinniest