出典:Wiktionary
A personification, attested from 1826.[1] Popularized by Winston Churchill, although it is not clear if he specifically referred to mental health.[2]
a black dog
the black knight
a horse with dark brown hair
the black race
the black
a black-coloured horse
a wolf cub
暗褐色.
a female dog―a bitch (は忌語)
blackbucks
わんわん.
a hawker
a falconer
a dogfight