A SIGIL is a symbol or signet used to represent a person, family, or organization. It is often used as a seal or signature on documents and other items. The term 'seal or signet' is often used interchangeably with 'SIGIL'. A SIGIL can be a simple geometric shape, an abstract design, or a complex heraldic device. It is usually associated with a particular individual or group, and is used to signify their authority or ownership.