The term 'Las Vegas Rival' can be summarized by the crossword solution Reno, which is a 4-letter word. Reno is the second largest city in Nevada and is often referred to as the 'Biggest Little City in the World'. It is located about 220 miles northeast of Las Vegas and is known for its casinos, entertainment, and outdoor activities. Reno is often considered a rival to Las Vegas due to its similar offerings and proximity.