'Expectoration' definitions:

Definition of 'expectoration'

noun

The process of coughing up and spitting out

noun

The act of spitting (forcefully expelling saliva) [syn: spit, spitting, expectoration]

From: GCIDE

Expectoration \Ex*pec`to*ra"tion\, n. [Cf. F. expectoration.]
1. The act of ejecting phlegm or mucus from the throat or lungs, by coughing, hawking, and spitting. [1913 Webster]
2. That which is expectorated, as phlegm or mucus. [1913 Webster]