Pays a call on means to visit someone, usually for a short period of time. The crossword solution for this term is 'SEES, ' which implies that the visitor is looking to observe or take in the environment of the person they are visiting. This phrase is often used to describe a social visit, such as when a friend visits another friend or when a family member visits another family member. It can also be used to describe a business visit, such as when a customer visits a store or when a client visits a service provider.