Puncture

And that's why you don't use pointy foils to begin with, you just buy the swords where the tip is round and totally blunt to begin with

I fenced for a little while in my teens. Most exciting and dangerous thing I've ever seen was seeing a guy pull off his mask as the other fencer was standing in agape horror as blood ran down his face from the broken foil stabbing into the dudes mask. He had lunged in and the foil bent and broke under pressure and kept going. Punctured the mask and scraped along the side of his head near his eye.