B1
a sport in which you sail across water by standing on a board and holding onto a large sail
Dictionary examples:
I tried windsurfing, but the wind kept pushing me back to the beach! (0.0)
My grandma loves windsurfing so much, she does it in her bathtub! (0.0)
My dog is better at windsurfing than me. He has four legs to balance! (0.0)
The channel is a popular area for windsurfing. (32.1)