rager /ˈɹeɪd͡ʒɚ/ noun3 •One who rages.Ragers are feared and detested by teachers for their potential to destroy a lesson. — 2005 •(US, slang) A boisterous and out of control party.Clearly, the kernel of inspiration behind this whole out-of-control rager was nostalgia for less politically correct times. — 2016 •(slang) A raging erection; a massive erection of the penis. formsragers