From Longman Dictionary of Contemporary Englishsailboardsail‧board /ˈseɪlbɔːd $ -bɔːrd/ noun [countable] DSOa flat board with a sail, that you stand on in the sport of wind-surfing SYN wind-surfer
Examples from the Corpus
sailboard• Today she intended to apply to join the sailing club and, hopefully, find herself a second-hand sailboard.• Later, they had returned on sailboards, taking advantage of the breeze that had sprung up around lunchtime.• The largest hall was devoted to all that floated, other than sailboards and powerboats. 