Definitions

1. noun

a greeting in some Asian cultures, particularly in Vietnamese, equivalent to ‘hello’ or ‘hi’, but often used as a more casual and affectionate way to address someone

“She said ‘chao’ to her friend as they parted ways.”

2. interjection

an expression used to greet someone, often accompanied by a wave or a smile

“Chao! How was your day?”

3. verb

to greet someone in a casual and friendly manner

“She chaoed her neighbor as she walked by.”