A "mother's maiden name" refers to the surname that a woman had before she got married. It is often used as a security question for online accounts, helping to verify a person's identity. This name is typically passed down through generations and can provide insights into family heritage and lineage. In many cultures, a woman's maiden name is an important part of her identity. After marriage, some women choose to keep their maiden name, while others adopt their husband's surname. This practice can vary widely depending on personal preference and cultural traditions, influencing how family names are recorded and used.