唾液,痰
Sputum \Spu"tum\, n.; pl. {Sputa}. [L., from spuere, sputum, to spit.] That which is expectorated; a salival discharge; spittle; saliva.
sputum n : expectorated matter; saliva mixed with discharges from the respiratory passages; in ancient and medieval physiology it was believed to cause sluggishness [syn: {phlegm}] [also: {sputa} (pl)]