noun

• The male ruler of a barony.
• A male member of the lowest rank of English nobility (the equivalent rank in Scotland is lord).
• (by extension) A person of great power in society, especially in business and politics.
• (UK, prison slang) A prisoner who gains power and influence by lending or selling goods such as tobacco.
• A baron of beef, a cut made up of a double sirloin.
• Any of various nymphalid butterflies of the genus Euthalia.
• (law, obsolete) A husband.
• A surname from French
• A surname from German
• A surname from Polish
• A surname from Ukrainian