One of the four humors of which the ancients supposed the blood to be composed. See Humor.
- Thick, sticky, stringy mucus secreted by the mucous membrane of the respiratory tract, as during a cold or other respiratory infection.
- One of the four humors of ancient and medieval physiology, thought to cause sluggishness, apathy, and evenness of temper.
- Sluggishness of temperament.
- Calm self-possession; equanimity.