pollution

noun5

1. •
   Physical contamination, now especially the contamination of the environment by harmful substances, or by disruptive levels of noise, light etc.

   • Pollution levels are almost always higher in cities rather than the countryside, what with the cars, industry and so on.
2. •
   Something that pollutes; a pollutant.
3. •
   Moral or spiritual corruption; impurity, degradation, defilement.

   • She condescended to wait on them at Pemberley, in spite of that pollution which its woods had received. — 1813
4. •
   (no longer used) The desecration of something holy or sacred; defilement, profanation.

   • Men who attend the Altar, and should most / Endevor Peace: thir strife pollution brings / Upon the Temple it self […]. — 1667
5. •
   (no longer used) The ejaculation of semen outside of sexual intercourse, especially a nocturnal emission.