What is Guinean?

Guinean definition and meaning on Dictionary terms:
a coastal region in W Africa, extending from the Gambia River to the Gabon estuary.
Formerly French Guinea. an independent republic in W Africa, on the Atlantic coast. About 96,900 sq. mi. (251,000 sq. km). Capital: Conakry.
Gulf of, a part of the Atlantic Ocean that projects into the W coast of Africa and extends from the Ivory Coast to Gabon.
(lowercase) a former money of account of the United Kingdom, equal to 21 shillings: still often used in quoting fees or prices.
(lowercase) a gold coin of Great Britain issued from 1663 to 1813, with a nominal value of 20 shillings.
(lowercase) Slang: Extremely Disparaging and Offensive. a contemptuous term used to refer to a person of Italian birth or descent.

(lowercase) Horse Racing. a person who does miscellaneous work in or around a horse stable.