Definition of guinea
- guinea Noun A person of Italian descent.
- guinea Noun A gold coin originally worth twenty shillings and minted for use in England's trade with Africa; later (from 1717 until the adoption of decimal currency) standardised at a value of twenty-one shillings.
- guinea Noun A ground-foraging bird of Africa, of the family "Numididea". Domesticated strains include Pearl, White, Buff, Blue, Purple and Lavender. Also called guinea fowl.