Definition from Wiktionary, the free dictionary
|simpl. and trad.|
- You refer to yourself as cháu when you're talking to someone who is much older than you (except your parents), and refer the one who you're talking to cháu if he or she is much younger than you (unless you are his or her parent). You may call any person, especially your child or grandchild, who is much younger than you cháu if you refer to him or her in the third person.
- In Central and Southern regions, the pronoun con is preferred.