1. A polite exchange of words, greetings, or pleasantries between two or more people
After a brief courtesy exchange, they got down to business.
Após uma breve troca de cortesia, eles passaram aos negócios.
2. In retail or service contexts, a replacement or refund given as a gesture of goodwill despite not being obligated
The store offered a courtesy exchange for the defective product.
A loja ofereceu uma troca de cortesia pelo produto defeituoso.