These 5 terms should help you begin to learn the ins and outs of the waterskiing world, and should this useful guide of terms should help you learn the rest.
Barefoot Waterskiing- The art of waterskiing barefoot, without the use of skis. This could be dangerous is there is debris in the water.
Bevel- The side of the water ski, or the transition area between the side and bottom of the ski. The rounder the bevel, the deeper the ski will ride in the water, and the more difficult it is to control.
Boom- A great way to introduce beginners to barefoot waterskiing. It's a pole that extends horizontally from the center of the boat to out and over the side of the boat, which is used for beginner's water skier and keeps the skier close to the boat for easy coaching, as well as gives the skier something steady and high to hold on to.
Birdle- The portion of the toerope that attatches to the water ski handle in a "Y" shape.
Deepwater Start- When a boat pulls a water-skier, wakeboarder, or barefooter up out of the water while holding on to a towrope.