Former Acorn is a term used to describe someone who was once a member of the Acorn organization. Acorn is a non-profit organization that works to empower low and moderate-income families by providing them with access to affordable housing, financial services, and other resources. The term 'Former Acorn' refers to someone who was once a part of this organization but is no longer affiliated with it. The crossword solution for the term 'Former Acorn' is OAK, which is a type of tree that is often associated with strength and stability.