The coffin in dreams represents the fear womb and restriction. You should consider if you have the fear of the small places such as claustrophobia, therefore you are afraid of being put in the coffin. The shape of the coffin also associates with the womb where the life is coming from. The dream could indicate the rebirth of new ideas or projects in your life. The dream, in which you see the body lying in the coffin, denotes to bad times and sad moods you are going to suffer. The dream about coffin could also indicate the lack of independence and freedom in your life. Perhaps you wish to have more of the choices where you could make the decisions on your own and not to influence by others.
Read more about dreaming of Coffin in other dream meanings interpretations.