short form of [as form of address] - madamIn some parts of the US, ma'am is used as a polite way of addressing a woman.How can I help you, ma'am?In Britain, ma'am is used to address the Queen, or a woman of high rank, esp. in particular professions, such as the army or the police, or, esp. in the past, a woman of high social class.
MA'AM
Meaning of MA'AM in English
Cambridge English vocab. Кембриджский английский словарь. 2012