piltrafa

scrap of meat; offal, scrap, junk (object in very bad condition); rag; skinny, feeble person; someone pathetic/a wuss

“Mi corazón era ya una piltrafa, destrozado por la mordedura de los celos.”

Probably from Old Spanish *peltraza, from Vulgar Latin *pertrāctiāre (“to pull apart”), from Latin per- (“through”) + trahere (“to pull, drag”).