From The Art and Popular Culture Encyclopedia
A cenotaph is a tomb or a monument erected in honour of a person or group of persons whose remains are elsewhere. It can also be the initial tomb for a person who has since been interred elsewhere. The word derives from the Greek κενοτάϕιον (kenos, one meaning being "empty", and taphos, "tomb"). Although the vast majority of cenotaphs are erected in honour of individuals, many of the best-known cenotaphs are instead dedicated to the memories of groups of individuals, such as the war dead of one country or empire.