Definition of black choler in US English:

black choler

noun

historical
  • 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.

Pronunciation

black choler

/ˌblak ˈkɒlə/