Meat of poor quality, very thin and full of nerves. Something that has no value or significance. Lint, scrap, jiron, backwardness, waste, surplus, irrelevant. Damaged, curled, deteriorated.
Something made of scraps, rags or rags. It is used to describe something or someone in poor condition, State of abandonment, unpresentable. Possibly from the Spanish " 34 trefe skin; ( that would be loose, hanging skin by poor nutrition ).
PILTRAFA: In Argentina, Chile and Peru, bargain, advantage,