What is the meaning of Cậu?

a maternal uncle (mother's brother)

a young male master

a younger male stranger

a father

I/me, your mother's brother

you, my mother's brother

you, my peer who I know is as old as me

you, a male younger than me

you, my young master, my old master's son

you, a young boy or man

he/him, a young boy or man

Source: wiktionary.org