a large bird with a long tail, often shot for food, or the meat of this bird.——朗文当代大辞典

Any of numerous large, long-tailed game birds of the subfamily Phasianinae (family Phasianidae), native to Asia, the males of which typically have showy plumage while the females are plainer and often brown; spec. (also common pheasant; see also ring-necked pheasant n. at ring-necked adj. Special uses) Phasianus colchicus, extensively introduced in western Europe, North America, and elsewhere for hunting, the male of which typically has a dark green head with scarlet wattles and (in some populations) a white collar.——牛津当代大辞典  @en