Guinˈean adjective

Of or relating to either of two countries in W Africa (the Republic of Guinea and the Republic of Guinea-Bissau), or to their inhabitants

A native or citizen of either of these countries

Guinea corn or guinea corn noun

1. Durra (Sorghum vulgare)
2. Pearl millet (Pennisetum typhoideum), a cereal

guinea fowl noun

A native African bird (genus Numida) of the pheasant family, ground-dwelling, dark grey with white spots

Guinea grass or guinea grass noun

A tall African grass of the millet genus (Panicum)

guinea hen noun

1. A guinea fowl, esp a female
2. A turkey (obsolete)
3. A courtesan (Shakespeare)

guinea pig noun

1. A small S American rodent, the cavy
2. (also human guinea pig) a person used as the subject of an experiment (as the animal commonly is in the laboratory)
3. A do-nothing, token company director, etc (slang)

Guinea worm or guinea worm noun

A very slender threadlike parasitic nematode worm (Dracunculus medinensis), common in tropical Africa