melancholy; despondency; the blues:
The black dog is over him.
(informal) depression or melancholy
black dog, the
Sir James (“the Black Douglas”) 1286–1330, Scottish military leader. James, 2nd Earl of, 1358?–88, Scottish military leader. Kirk (Issur Danielovitch Demsky) born 1916, U.S. actor. Lloyd C(assel) [kas-uh l] /ˈkæs əl/ (Show IPA), 1877–1951, U.S. novelist and clergyman. Michael, born 1944, U.S. actor and producer (son of Kirk Douglas). Stephen A(rnold) 1813–61, U.S. political leader […]
any of several ducks having dusky or black plumage, as Anas rubripes, of the northeastern U.S. and Canada.
See under white dwarf. a star, approximately the size of the earth, that has undergone gravitational collapse and is in the final stage of evolution for low-mass stars, beginning hot and white and ending cold and dark (black dwarf) noun one of a large class of small faint stars of enormous density (on average 108 […]