From Wiktionary, the free dictionary
edgeplay (uncountable)
- Alternative form of edge play
2008, Hardcore mistress, “****DOMINATRIX BUSTS YOUR BALLS WITH A ROCK**** 75162”, in alt.sex.telephone.alt (Usenet):This includes public humiliation, findom, blackmail, hardcore cock and ball torture, bloodletting, cutting, edgeplay and so on.