Aquaboard

Part of speech: noun

Definitions

1. A flat board on which a rider stands and is pulled across the surface of water by a motorboat
2. A buoyant board used for gliding over water behind a towing boat, similar to a water ski but with a platform for standing
3. A towed water sports board that a rider balances on while being pulled at speed across a lake or sea

Etymology: "Aquaboard" is a plain compound: "aqua-" joined to "board." The prefix "aqua-" comes from Latin "aqua," meaning "water," and it has long been used in English to form words for things done on or in water. "Board" here is the flat wooden platform a rider stands on, the same sense found in "skateboard" and "surfboard." Put together, the term names a board used for riding on water, the kind of device a person stands on while being pulled across the surface. The construction follows the pattern of earlier "aqua-" coinages, which is why it reads transparently to anyone who knows the two parts.