1. Thick, sticky, stringy mucus secreted by the mucous membrane of the respiratory tract, as during a cold or other respiratory infection. 痰，由呼吸道粘膜分泌的浓稠而粘的液体
2. One of the four humors of ancient physiology, described as cold and moist and thought to cause sluggishness, apathy, and evenness of temper； 古代生理学的四种体液之一，被描述成冷淡和伤感
3. Sluggishness of temperament；性情迟缓
4. Calm self-possession; equanimity；冷静自控，沉着
Example sentence:
1. Humour, also spelled Humor (from Latin "liquid," or "fluid"), in early Western physiological theory, one of the four fluids of the body that were thought to determine a person's temperament and features. In the ancient physiological theory, the four cardinal humours were blood, phlegm, choler (yellow bile), and melancholy (black bile); the variant mixtures of these humours in different persons determined their "complexions," or "temperaments," their physical and mental qualities, and their dispositions. The ideal person had the ideally proportioned mixture of the four; a predominance of one produced a person who was sanguine (Latin sanguis, "blood"), phlegmatic, choleric, or melancholic. The choleric man was not only quick to anger but also yellow-faced, lean, hairy, proud, ambitious, revengeful, and shrewd. By extension, "humour" in the 16th century came to denote an unbalanced mental condition, a mood or unreasonable caprice, or a fixed folly or vice.
Humour, 也作Humor(来自拉丁词, "liquid", 或 "fluid"), 在早期西方生理学理论中，Humor是指人体四种体液， 它们被认为决定一个人的性格和特征。在古代生理学理论中，四种主要的humour是：blood(血)，phlegm (粘液)，choler (黄胆汁), melancholy (黑胆汁)；在不同身上不同的组合决定人的脾性，生理，心理特征和性格。理想中的人四种体液的混合比例最合理。其中一种占优势就使人变得sanguine(拉丁词 sanguis, "blood", 热情乐观，面色红润)，phlegmatic (冷淡，迟钝的)，choleric (脾气暴躁的)或melancholic (忧郁的). Choleric的人不但易怒，而且脸发黄，瘦削，多毛，骄傲，有雄心和报复心的，精明的。在16世纪humour的意义得到延伸，用来表示不平衡的心理状态，情绪，或不理性的无常，或固执的愚行或恶习。
2. Someone with TB disease of the lungs or vocal cords may spread TB to others when they cough or sneeze. The greatest risk of TB transmission occurs when TB bacteria are found in the person's sputum (phlegm).
在肺部和声带中带有结核菌的人咳嗽打喷嚏可能传播结核给他人。人的唾液（痰）中发现的结核菌传播风险最大。
four cardinal humours were blood, phlegm, choler (yellow bile), and melancholy (black bile)
