In relation to food — to meat in particular — graso means "fatty". Some meats, such as carne de vaca (beef) and pollo (chicken) are only pocito graso; others such as tocino (bacon) and cuy are muy graso. Graso is different to the word gordo, which is used to describe a person as fat or chubby. The noun grasa means "grease", "fat", or "lard" — so it's specific to animal products. Don't eat too much comida grasienta (fatty / greasy food), or you'll end up gordito y feo ("fat and ugly")!