What is the meaning of Flewme?

Phlegm as one of the four cardinal humours believed to influence health and mood.

Phlegm, sputum or a similar mucous substance; material coughed up.

A phlegmatic feeling or something that induces or causes it.

fleume, n.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007, retrieved 9 December 2018.

Wright, Joseph (1892), “Chapter IV. The French Element — The Vowels.”, in A grammar of the dialect of Windhill, in the West Riding of Yorkshire (English Dialect Society Series C; 67), London: for the English Dialect Society by Kegan Paul, Trench, Trübner, & Co., →OCLC, § 206, page 61.

Source: wiktionary.org