SPUTUM
phlegm, sputum
(noun) expectorated matter; saliva mixed with discharges from the respiratory passages; in ancient and medieval physiology it was believed to cause sluggishness
Source: WordNet® 3.1
Etymology
Noun
sputum (countable and uncountable, plural sputa)
(physiology) Matter coughed up and expectorated from the mouth, composed of saliva and discharges from the respiratory passages such as mucus, phlegm or pus.
Source: Wiktionary
Spu"tum, n.; pl. Sputa. Etym: [L., from spuere, sputum, to spit.]
Definition: That which is expectorated; a salival discharge; spittle;
saliva.
Source: Webster’s Unabridged Dictionary 1913 Edition