1. a river, canal, or other route for travel by water
2. a navigable body of water used for transportation or commerce
Usage: commercial

Examples

• The Panama Canal is an important international waterway.
• Small boats traveled along the narrow waterway between the islands.
• The city built its economy around the busy waterway that connected it to the ocean.
• Environmental groups are working to protect the natural waterway from pollution.
• The ancient waterway served as a major trade route for centuries.
• Ice blocked the waterway during the harsh winter months.