Landlocked (adjective)

1. Enclosed by land with no access to the sea.
2. Located entirely within the land.

Origin:

Formed from the combination of 'land' and 'locked' with the sense of being enclosed by land, late 17th century.

Examples:

1. Switzerland is a landlocked country in Europe.
2. Nepal is surrounded by Himalayas, making it a landlocked country.
3. The landlocked city was completely isolated from the coast.
4. The small landlocked province was far from the sea.
5. The landlocked state was located in the middle of the country.