foul matter

As Marduk moved towards it, a splash of foul matter fell upon him from above, and extinguished the lantern.

Filth, filth, n. foul matter: anything that defiles, physically or morally.

In "Hamlet" Shakespeare let out some of the foul matter which Herbert's mean betrayal had bred in him.

One system coloured red showed the pipes that received foul matter.

Its eyes looked wild; it was unnaturally brisk, and running about; the nose discharged more freely, but not yet any foul matter.