1. A person who leads or directs others, especially on a tour or journey
The tour guide showed us around the museum.
A guia nos mostrou o museu.
2. A document or publication that provides information or instructions
I consulted the user guide for instructions.
Consultei a guia de usuário para as instruções.
3. Something that serves as a model or standard for behavior or action
Moral principles serve as a guide for our decisions.
Os princípios morais servem como guia para nossas decisões.