The term "sept" refers to a division of a family or clan, particularly in Scottish and Irish cultures. It is often used to describe a group of people who share a common ancestor and are part of a larger family lineage. Septs can be associated with specific surnames and may have their own unique traditions and histories. In addition to its familial meaning, "sept" can also refer to a group of related species in biology. In this context, it is a taxonomic rank that falls between a genus and a species, helping to classify organisms based on shared characteristics. This usage is less common but highlights the versatility of the term.