• Mistress (lover) – a woman, other than his wife, with whom a man has a continuing sexual relationship.
• Mistress (form of address) – an old-fashioned term for the lady of the house, especially one who is head of the household.
• Mistress meaning wife: used in some Commonwealth dialects, but not currently in most British dialects of English
• A dominatrix in BDSM.
• The woman who owns a slave.
• The woman who employs a servant (comparable to master and servant).
• Schoolmistress, or female school teacher (also called a "schoolmarm"). The term is now obsolete in the UK; see schoolmaster.
• Mrs — original abbreviation
• Mistress of the Robes, the senior lady of the British Royal Household.
• Mistress (band), a sludge metal band from Birmingham, England, United Kingdom.
• Mistress (1992 film).
• Mistress (1987 film).
• Mistresses (2008 British TV series).

References