noun One of the four humors making up the body in ancient and mediaeval medicine; said to be cold and moist, and often identified with mucus. .mw-parser-output .defdate{font-size:smaller}
noun Viscid mucus produced by the body, later especially mucus expelled from the bronchial passages by coughing.
noun A watery distillation, especially one obtained from plant matter; an aqueous solution.
noun Calmness of temperament, composure; also seen negatively, sluggishness, indifference.
noun ↑ Douglas Harper (2001–2026), “phlegm”, in Online Etymology Dictionary.
noun ↑ “phlegm”, in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.
noun 1 2 Dobson, E[ric] J. (1957), English pronunciation 1500-1700, second edition, volume II: Phonology, Oxford: Clarendon Press, published 1968, →OCLC, § 8, page 475.
noun ↑ Walker, John (1791), “Phlegm”, in A Critical Pronouncing Dictionary […] , London: G. G. J. and J. Robinſon […] and T. Cadell, →OCLC, page 388, column 2 of 2.