Green’s Dictionary of Slang

windie n.

[abbr.]

(N.Z.) a wind-surfer.

[UK]Metro (Auckland) Jan. 101: The launchies [were] now confronting ‘yachties’ (of a miniature variety)...the eventual result being the setting up of a windsurfing association. Not only that; the windies charged an entrance fee for the next race [DNZE].