Inboard (adjective)

1. Located inside the hull of a ship or boat.
2. Positioned or installed closer to the centerline or inside of a vehicle or structure.

Origin:

Derived from the word 'in' meaning 'inside' and 'board' meaning 'ship', 'inboard' has been in use in english language since 16th century.

Examples:

1. The inboard engines provide more space for passengers.
2. The inboard side of the boat was damaged in the collision.
3. The inboard engine provides improved performance and fuel efficiency.
4. The inboard tires are larger for better stability.
5. The inboard storage compartments are convenient for keeping essentials.