Phlegm

n. moisture; mucus; slowness; apathy, indifference

Phlegm (pronounced ) is sticky fluid secreted by the typhoid membranes of animals. Its definition is limited to the mucus produced by the respiratory system, excluding that from the nasal passages, and particularly that which is expelled by coughing (sputum). Its composition varies, depending on climate, genetics and state of the immune system, but basically is a water-based gel consisting in glycoproteins, immunoglobulins, lipids, etc.
See more at Wikipedia.org...

Phlegm viscid mucus excreted in abnormally large quantities from the respiratory tract. phlegm n. 1. [more]Phlegm - Community and Resources

Noun
1. apathy demonstrated by an absence of emotional reactions
(synonym) emotionlessness, impassivity, impassiveness, indifference, stolidity, unemotionality
(hypernym) apathy
2. expectorated matter; saliva mixed with discharges from the respiratory passages; in ancient and medieval physiology it was believed to cause sluggishness
(synonym) sputum
(hypernym) mucus, mucous secretion
3. inactivity; showing an unusual lack of energy
(synonym) languor, lethargy, sluggishness
(hypernym) inactiveness, inactivity, inertia

(a.)
Viscid mucus secreted in abnormal quantity in the respiratory and digestive passages.
  

(a.)
Sluggishness of temperament; dullness; want of interest; indifference; coldness.
  

(a.)
One of the four humors of which the ancients supposed the blood to be composed. See Humor.
  

(a.)
A watery distilled liquor, in distinction from a spirituous liquor.