surfing
Sport consisting of riding the side of a breaking wave on a surfboard.
surfboard 
Floating board made of synthetic material and covered with wax or antiskid strips; its length and shape vary depending on the intended use.
skeg 
Triangular part at the rear underside of the board that provides directional stability.
boot 
Synthetic rubber shoe that is used for surfing in cold water or for protecting the feet from coral and rocks.
surfer 
Athlete who practices surfing while standing, lying down or kneeling on a surfboard.