thick mucus secreted in abnormal quantities in the respiratory passages
intrepid coolness; composure
dull or apathetic coldness or indifference
one of the four humours in medieval physiology, considered to be cold and moist and to cause sluggishness
phlegmy /ʹflemi/ adj
[Middle English fleume via French and late Latin from Greek phlegma flame, inflammation, phlegm, from phlegein to burn]