/gal'euh nay"sheuhs/ , adj.
1. pertaining to or resembling the domestic fowls.
2. belonging or pertaining to the order Galliformes, comprising medium-sized, mainly ground-feeding domestic or game birds, as the chicken, turkey, grouse, pheasant, and partridge.
[ 1775-85; gallinaceus pertaining to poultry, equiv. to gallin ( a ) hen (deriv. of gallus cock) + -aceus -ACEOUS ]