Law & Order: SVU fans, do you know the name of this word?

Alright, so my friend and I were reading this book and somehow we started talking about the term for raping someone with an object. I told her that I remembered that law and order had mentioned a couple times (well more than a couple) but I still can't remember. Please help (and no, I'm not a creeper, I'm just trying to prove a point. Rape is wrong by the way!).