quarter-pounder noun 5adjective 1forms 2 noun5 •A beef hamburger whose patty weighed approximately a quarter of a pound before cooking."Deal. I'm hungry. Wanna grab a little snack with me? Maybe a half a dozen quarter pounders and a couple large fries?" — 2011 •A burger with a patty of such uncooked weight, of an alternative to beef. •A burger patty of such uncooked weight. •A food item similar to a burger patty of such uncooked weight, such as a meatball. •A sandwich weighing approximately a quarter of a pound. adjective1 •Having a weight of a 1/4 of a pound. formsquarter pounders · quarter-pounders