The term 'debt metaphor' is a figure of speech used to describe a situation in which someone owes something to another person or entity. The term is often used to describe a situation in which a person has a financial debt, but it can also be used to describe other types of debts, such as emotional or moral debts. The crossword solution for the term 'debt metaphor' is 'HOLE, ' which is an apt description of the feeling of owing something to someone else. The metaphor of a HOLE implies that the debt is deep and difficult to escape from.