Coffin or Casket as a object that goes into the earth symbolizes the Earth Mother and womb symbol. Consequently putting someone to rest represents need to end a situation or relationship. Symbolically speaking coffin or casket represent end of one life and opening of another. Coffin is sometimes reminder of a desire to get rid of someone you know. Anxiety of losing a important person in your life. Coffin also symbolizes death of a relationship and the feelings of loss, emotions about the death of someone close to you.