Seaway (noun)

1. A navigable route through the sea, especially one artificially created.
2. A deep-water channel, especially one through a chain of lakes and rivers, that provides a navigable route for ships.

Origin:

The word 'seaway' originated in the late 19th century and is a compound of 'sea' and 'way', meaning a navigable route through the sea.

Examples:

1. The Great Lakes Seaway is a system of locks, canals, and channels that connects the Great Lakes to the Atlantic Ocean.
2. The seaway allowed large ships to travel from the Atlantic Ocean to the Great Lakes.
3. The proposed seaway would connect the Pacific and Atlantic Oceans.
4. The seaway was busy with cargo ships and pleasure boats.
5. The seaway was crucial for the transportation of goods and raw materials.