Surface for surfing (4)
I believe the answer is:
wave
(Other definitions for wave that I've seen before include "Fasten; neckwear" , "Hand gesture -- hair feature" , "Undulating curve" , "Undulate" , "Brandish" .)
I believe the answer is:
wave
(Other definitions for wave that I've seen before include "Fasten; neckwear" , "Hand gesture -- hair feature" , "Undulating curve" , "Undulate" , "Brandish" .)