بَلْغَمٌ

[Phlegm;] one of the four [natural constituents termed] طَبَايءِع; (S;) [i. e.] one of the humours (أَخْلَاط) of the body. (K.)

And hence, (tropical:) A heavy, or sluggish, person, who is a great talker, or babbler. (TA.)