The term 'of a clan' can be described by two crossword solutions: 'TRIBAL' and 'septal'. TRIBAL refers to a group of people who share a common ancestry, culture, and language. It is often used to describe indigenous peoples or ethnic groups. Septal, on the other hand, refers to a division within a larger group, such as a family or clan. It is often used to describe a branch of a family or a sub-group within a larger organization.