(literary) a respectful form of address for a man, especially an elderly person, scholar, or teacher; specifically used by disciples to refer to Confucius 孔子 kǒng​zǐ

a bookish person who is stubborn or rigid in their thinking; often used sarcastically

(archaic) a title of respect used by a wife for her husband

(archaic) a porter or manual laborer, such as those used for carrying loads or performing military service