- Foul matter; anything that soils or defiles; dirt; nastiness.
- Anything that sullies or defiles the moral character; corruption; pollution."To purify the soul from the dross and filth of sensual delights." [Tillotson.]
Etymology: OE. filthe fulðe, AS. fȳlð, fr. fūl foul; akin to OHG. fūlida. See Foul, and cf. File