'Expectorate' definitions:

Definition of 'expectorate'

verb

Clear out the chest and lungs; "This drug expectorates quickly" [syn: expectorate, clear out, drive out]

verb

Discharge (phlegm or sputum) from the lungs and out of the mouth [syn: expectorate, cough up, cough out, spit up, spit out]

From: GCIDE

Expectorate \Ex*pec"to*rate\, v. t. [imp. & p. p. Expectorated; p. pr. & vb. n. Expectorating.] [L. expecrorare to drive from the breast; ex out + pectus, pectiris, breast. See Pectoral.] To eject from the trachea or lungs; to discharge, as phlegm or other matter, by coughing, hawking, and spitting; to spit forth. [1913 Webster]

From: GCIDE

Expectorate \Ex*pec"to*rate\, v. i. To discharge matter from the lungs or throat by hawking and spitting; to spit. [1913 Webster]