1. the distance between the waterline and the upper edge of the side of a ship or boat
Usage: nautical
2. the height of a dam, dike, or embankment above the normal water level
Usage: engineering

Examples

• The ship’s freeboard was reduced when it took on cargo.
• A higher freeboard helps prevent water from entering the boat in rough seas.
• The captain checked the freeboard before departing in stormy weather.
• Engineers designed the dam with adequate freeboard to handle flood conditions.
• The levee’s freeboard was insufficient during the hurricane surge.
• Maritime regulations specify minimum freeboard requirements for safety.