Noun

• S: (n) seaway, sea lane, ship route, trade route (a lane at sea that is a regularly used route for vessels)
• has instance
• direct hypernym / inherited hypernym / sister term
• S: (n) trade route (a route followed by traders (usually in caravans))
• has instance
• S: (n) Silk Road (an ancient trade route between China and the Mediterranean (4,000 miles); followed by Marco Polo in the 13th century to reach Cathay)
• direct hypernym / inherited hypernym / sister term
• S: (n) path, route, itinerary (an established line of travel or access)