Grime

Etymology

The triliteral root ghayn rā rā (غ ر ر), according to corpus.quran.com, occurs in the Quran 27 times.

Compare with English «grime» - "mask; dirt, grease, soot, etc. that is ingrained and difficult to remove", from Proto-Germanic «grīmô» - "mask, visor, helmet", from Proto-Indo-European «gʰrey-» - "to smear".