Definitions

1. pronoun

a person or people being addressed or referred to

“Quem procurou o livro? (Who looked for the book?)”

2. noun

a person or people being the object of an action

“Quem escreveu essa carta? (Who wrote this letter?)”

3. interrogative

used to ask a question about a person or people

“Quem está no telefone? (Who is on the phone?)”