aftershow noun 2adjective 1forms 1 noun2 •An event which takes place following a showPrince had brought the band back onstage to join him in the final encore of the main show, 'Get on the Boat', so it seemed likely he'd jam with them at the aftershow. — 2016 •A talk show that discusses another television show that has already aired. adjective1 •Occurring after a show. formsaftershows