What does faecŭlentĭa mean in Latin?

faecŭlentĭa, a noun, means “lees”.

noun

faecŭlentĭa

faecŭlentĭa, ae, f. faeculentus,

I. lees, dregs; filth (post-class.).

I. Prop., Sid. Ep. 3, 13.—

II. Trop.: morum, Fulg. Const. Verg. p. 156 Munk.