sailboard

[ seyl-bawrd, -bohrd ]
/ ˈseɪlˌbɔrd, -ˌboʊrd /

noun

a long board, usually of Plexiglas, used for windsurfing, having a mount for a sail, a daggerboard, and a small skeg.
a small, flat, single-masted sailboat, usually having no cockpit.

Origin of sailboard

An Americanism dating back to 1960–65; sail + board

British Dictionary definitions for sailboard

sailboard
/ (ˈseɪlˌbɔːd) /

noun

the craft used for windsurfing, consisting of a moulded board like a surfboard, to which a mast bearing a single sail is attached by a swivel joint