carl: say falacorn, let's break out the d20 and set us up a game of *gasp* dungeons and dragons
"a 20 sided die used in many games in the "dungeons & dragons" series of tabletop role-playing board games
"carl: say falacorn, let's break out the d20 and set us up a game of *gasp* dungeons and dragons" What is the definition of "d20"?