Gruel is A water soup, was fed to orphan's as in the movie and book Oliver Twist (also features in a simpsons episode(as Krusty brand Gruel))A greyish colour very water down and often based on potatoes, or wheat and other starch tasting vegies.
Krusty Brand gruel 9 out of 10 orphans can't tell the difference.
by Carrie Henschell January 12, 2005
A thin liquid food of oatmeal or other meal boiled in milk or water.
Wow, now that's tasty gruel!
by jdaniel November 15, 2007
Shit Rory would eat
Remember that once Rory said he'd eat gruel? Ya boy got me FUCKED up.
by dopecrit April 15, 2015