verb (v)

• clear out the chest and lungs(verb.change)

  Example:
  This drug expectorates quickly.
  

  Synonym:
  clear out, drive out
  

  source: wordnet30
• discharge (phlegm or sputum) from the lungs and out of the mouth(verb.body)

  Synonym:
  cough out, cough up, spit out, spit up
  

  source: wordnet30
• To eject from the trachea or lungs; to discharge, as phlegm or other matter, by coughing, hawking, and spitting; to spit forth.(verb)

  source: webster1913
• To discharge matter from the lungs or throat by hawking and spitting; to spit.(verb)

  source: webster1913