armlock
The act of locking another persons arms above their head. In short terms, it is a move where you lock another persons arms in place. It looks a bit similar to a full nelson, but unlike where a full nelson, you don't grab the neck when you perform an armlock. Do not confuse this with holding arms, which is simply put any the act of holding another person's arms.
For the grappling technique also called "armlock", see armbar.