Definition of tow-in in English:

tow-in

adjective

  • Designating or relating to a form of surfing in which a surfer is towed on his or her board by a motorized craft, such as a jet ski, into large breaking waves that are too difficult or impossible to catch using the traditional method of paddling; often as "tow-in surfer", "tow-in surfing".

Origin

1990s; earliest use found in Surfer.