black choler
/ˌblak ˈkɒlə/Now historical
noun
In ancient and medieval physiology and medicine: the humour choler in an abnormal form having a dark or black colour; (also) the humour melancholy (in a normal or abnormal form). Also called atrabile. Compare slightly earlier black cholera, and later black bile.
Origin
Late Middle English; earliest use found in Guy de Chauliac's Grande Chirurgie. From black + choler, after post-classical Latin cholera nigra.