any of several African, gallinaceous birds of the subfamily Numidinae, especially a common species, Numida meleagris, that has a bony casque on the head and dark gray plumage spotted with white and that is now domesticated and raised for its flesh and eggs.
Also, guineafowl.
Origin
1645-55
British Dictionary definitions for guinea fowl
guinea fowl
noun
1.
any gallinaceous bird, esp Numida meleagris, of the family Numididae of Africa and SW Asia, having a dark plumage mottled with white, a naked head and neck, and a heavy rounded body