Noun | 1. | genus Gallus - common domestic birds and related forms bird genus - a genus of birds domestic fowl, fowl, poultry - a domesticated gallinaceous bird thought to be descended from the red jungle fowl gallina, jungle fowl - small Asiatic wild bird; believed to be ancestral to domestic fowl family Phasianidae, Phasianidae - pheasants; quails; partridges |