Definitions
1.NounA form of address for a woman: contraction of madam.
2.NounA polite and formal way to address a woman."Ma'am, will you be attending the dinner this evening?"
3.NounA respectful term of address to a woman of higher rank or position."– Sergeant, have the platoon in formation and ready for inspection at 0800.– Aye aye, ma'am."
4.NounA title for a married woman."That is Ma'am Smith, the matriarch of the Smith families."
5.NounA female schoolteacher; a schoolmarm.
6.VerbTo address (a woman) as "ma'am".