/ˈbɪɡəmi/ – Noun
Definition: 1. tội lấy hai vợ (chồng), tội song hôn, tội vi phạm chế độ một vợ một chồng;
2. cuộc hôn nhân thứ hai.
A more thorough explanation: Bigamy is the act of entering into a marriage with one person while still legally married to another person. It is a criminal offense in many jurisdictions.
Example: The defendant was charged with bigamy for marrying a second spouse while still legally married to their first spouse.