Iron horse

An "iron horse" is an old-fashioned term for a train or locomotive. Historically, the phrase emerged during the early days of rail travel when trains transformed transportation, much like horses did centuries earlier. The name emphasizes the strength and power of steam-powered engines, which were initially made of iron and operated on rails, revolutionizing industry, travel, and commerce. Today, it’s a nostalgic expression reflecting the importance of trains in industrial development and the way they connected people and goods across vast distances.