black dog
noun Informal.
melancholy; despondency; the blues: The black dog is over him.
Origin of black dog
First recorded in 1700–10
Words nearby black dog
black death,
black diamond,
black diet,
black disc,
black disease,
black dog,
black duck,
black dwarf,
black earth,
black economy,
black english
British Dictionary definitions for black dog
black dog
noun
informal
depression or melancholy