SAILBOARD Meaning of SAILBOARD in English sail ‧ board /ˈseɪlbɔːd $ -bɔːrd/ BrE AmE noun [countable] a flat board with a sail, that you stand on in the sport of ↑ wind-surfing SYN wind-surfer Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012