Etymology
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expectoration (n.)

"act of discharging phlegm or mucus from the throat or lungs by coughing or hawking and spitting," 1670s, noun of action from expectorate.

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Definitions of expectoration

expectoration (n.)
the process of coughing up and spitting out;
expectoration (n.)
the act of spitting (forcefully expelling saliva);
Synonyms: spit / spitting
From wordnet.princeton.edu