preroll noun 3verb 2forms 3 noun3 •(Internet) An advertisement that plays before the main content.Are ads that play before video clips, known as prerolls, more effective when paired with banner ads? — 2009 •A joint which has been preprepared by a cannabis vendor or dispensary.I bought prerolls for almost a decade until I got good at rolling my own joints. •A period of time during which the camera rolls but before the action begins. verb2 •To roll something in advance. •To make or show a preroll. formsprerolled · prerolling · prerolls
