captive — A captive person or animal is being kept imprisoned or enclosed.
confined — If something is confined to a particular place, it exists only in that place. If it is confined to a particular group, only members of that group have it.
gaoled — to take into or hold in lawful custody; imprison.
behind bars — If you say that someone is behind bars, you mean that they are in prison.
interned — to restrict to or confine within prescribed limits, as prisoners of war, enemy aliens, or combat troops who take refuge in a neutral country.
put away — to move or place (anything) so as to get it into or out of a specific location or position: to put a book on the shelf.
trapped — traps, Informal. personal belongings; baggage.
inside — on the inner side or part of; within: inside the circle; inside the envelope.
