The term 'STINGRAY RELATIVE' can be solved by the crossword solution SKATE, which is a five-letter word. Skates are a type of cartilaginous fish related to stingrays and are found in temperate and tropical waters around the world. They have flattened bodies and wing-like pectoral fins that allow them to move quickly through the water. Skates are bottom-dwellers and feed on small fish, crustaceans, and mollusks.