Definition of ding:
(n) :
damage on a
surfboard, usually in the form of a
dent; very minor damaged caused in a traffic accident
"as a kid, I always broke off a chunk of wax and jammed it into a fresh ding in hopes of saving the foam from water invasion, but days later I found myself picking out waxy bits from a brown-stained nightmare. — Jay DiMartino"
"if you surf regularly, then you're going to ding your board. — BBC surfing Wales"