[ 'kɒlə ]
■ noun
1》 (in medieval science and medicine) one of the four bodily humours, identified with bile, believed to be associated with a peevish or irascible temperament.
2》 archaic anger or irascibility.
Origin
ME: from OFr. colere , from L. ~a 'diarrhoea' (from Gk kholera ), which in late L. acquired the senses 'bile or anger', from Gk kholē 'bile'.