The sport of going down sand dunes on a board. You climb to the top of a dune, strap in or sit down, and slide to the bottom on the loose sand. It is talked about as snowboarding's desert cousin, and the two are close in shape but not in feel: sand is slower, hotter and much heavier to fall on, and there is no lift, so you walk up every single time. Popular spots are places with big dunes — Peru, Namibia, Egypt, parts of Australia and the US southwest. The word is a noun only, the name of the activity, so it turns up after verbs like go: 'go sandboarding', the same pattern as 'go swimming', 'go fishing'. One honest note: the given origin line calls it a blend of sand and snowboarding, and that is fair, but you can just as easily read it as sandboard + -ing. Both routes land in the same place, and nobody will hear a difference.

滑沙（運動）；沙漠滑沙