鸟禽类鸡形目里任何一种鸟, 尤指普通的 、 广泛家养的小鸡 ( 原鸡 )Any of various birds of the order Galliformes, especially the common, widely domesticated chicken ( Gallus gallus )....

“鸡形目”的英语可以翻译为：Galliformes ...