Multiple Object/armature parent

Is it possible to give more than one armature to an object? I want to make a mouth of sorts, and I want two armatures, each pointed toward each other, where the points of the armatures will be the middle of the jaw. However, I can’t parent more than one armature at a time. What alternative options are there?

I’m sorry if I missunderstood you but, you do know you can have several bones in one Armature, right? Just press space and add a bone or Ctrl+LMB to extrude a chain of bones.