late Middle English (also denoting diarrhoea): from Old French colere 'bile, anger', from Latin cholera 'diarrhoea' (from Greek kholera), which in late Latin acquired the senses bile or anger', from Greek kholē 'bile'
One of the four fluids of the body, blood, phlegm, choler, and black bile, whose relative proportions were thought in ancient physiology to determine a person's disposition and general health. 基本的体液血液、粘液、胆汁和黑胆汁四种体液之一，古代生理学家认为它们的相对比例决定一个人的性情和健康状况
