The definition of a guinea is a gold British coin that was issued from 1663 to 1813 and was worth one pound and one shilling, or a coastal region in West Africa, or an offensive slang word for a person of Italian descent.(noun)
See guinea in Webster's New World College Dictionary
Origin: the gold of which it was first made came from Guinea
See guinea in American Heritage Dictionary 4
Origin: After the Guinea coast of Africa, the source of the gold from which it was first made.
, Gulf of
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