What does the word phlegm mean?

Usage examples for phlegm

  1. They seem to be a docile, courteous, good- natured people; but, notwithstanding the predominant phlegm of their tempers, quick in resenting what they look upon as an injury, and, like most other passionate people, as soon forgetting it. – A General History and Collection of Voyages and Travels, Volume 16 by Robert Kerr
  2. If he is kept from excitement and gets rid of all that phlegm which has accumulated in his lungs, he will be well enough. – The Squatter and the Don by C. Loyal