Sega /ˈseɪ.ɡə/ noun1 •Any of various video game consoles manufactured by Sega, a Japanese video game developer and publisher and manufacturer of arcade games and formerly of video game consoles.I would lay in bed for a few hours playing games on my Sega, getting totally absorbed in it as though it were all real and then I would sleep for the rest of the day. — 2007 formsSegas