"Death heads" is a term that refers to symbols or emblems that signify death or danger. There are various synonyms for this term, such as skull and crossbones, poison sign, black flag, death symbol, and skull icon. These symbols are often used to warn people of danger, as in the case of the poison sign, which is commonly found on containers of hazardous substances. The skull and crossbones are also widely recognized as a symbol of piracy, associated with danger and death on the high seas. The use of death symbols in popular culture, including music and fashion, has created a continued interest in these symbols and their various iterations.