covered wagon: a large wagon with broad wheels and an arched canvas top; used by the United States pioneers to cross the prairies in the 19th century
wagon: any of various kinds of wheeled vehicles drawn by an animal or a tractor
survivor guilt: a deep feeling of guilt often experienced by those who have survived some catastrophe that took the lives of many others; derives in part from a feeling that they did not do enough to save the others who perished and in part from feelings of being unworthy relative to those who died