The word "ma am" is likely a typographical error for "ma'am," which is a respectful form of address used to refer to a woman, especially in formal or polite contexts. It is often used when addressing a woman whose name you do not know, indicating respect.
The term "ma'am" is a contraction of "madam," which comes from the French "ma dame," meaning "my lady." The use of "madam" in English dates back to the 15th century, while "ma'am" became commonly used in the 20th century.