freeboard

Plural: freeboards

Noun

• The vertical distance between the waterline and the uppermost watertight deck of a vessel.
• The distance between a water level and the top of something that contains or restrains it (such as a dam).
• The distance between the top of sea ice and the water level.
• A type of skateboard which simulates the movement of a snowboard when used on a downhill coarse, allowing snowboarding techniques, which has an addition of two centerline casters that extend below the traditional skateboard wheels and bogies.

Related Words

inline skate, longboard, roller ski, skateboard, street luge