Definition of skeg in US English:



  • 1A tapering or projecting stern section of a vessel's keel, which protects the propeller and supports the rudder.

    • ‘Although the 450 Coastal Commander has a shallow skeg or keel to aid directional control at slow speed, she is not immune to the handling difficulties common to this type of boat.’
    • ‘They describe aluminum housings pitted with holes ‘like Swiss cheese,’ and skegs and cavitation plates so brittle they crumble in the hand.’
    1. 1.1 A fin underneath the rear of a surfboard.


Early 17th century: from Old Norse skegg ‘beard’, perhaps from Dutch scheg.