This is the 828th most frequent Portuguese word.
filho
"Filho" means "son" in English.
Here, 'filho' signifies a male offspring and is used in direct possession with 'meu' (my).
O João é meu filho.
João is my son.
The term 'filho' refers to a male offspring and is related to 'do meu amigo' (of my friend), showing relationship.
O filho do meu amigo é muito educado.
The son of my friend is very polite.
In this example, 'filho' is combined with 'adotivo' (adopted) to indicate the legal relationship of an adopted son.