Saliva or Mucus, When Someone Cough Up
Puzzle 7 of Famous Horses Hard Pack
Question is: Saliva or Mucus, When Someone Cough Up
and the answer is: SPUTUM
Word Meaning:
SPUTUM — (medicine, pulmonology) Matter coughed up and expectorated from the mouth, composed of saliva and discharges from the respiratory passages such as mucus, phlegm or pus.
Definitions from Wiktionary.