purge
‘to purify, to remove (impurities and other elements) by or as if by cleansing’
Lexical development traced from the Tamil root:
E. purche, purgi, porge < A.F. purger, O.F. purgier ‘wash, refine, purify’ < Lat. purgare ‘cleanse, make clean; purify’ < O.Lat. purigare < purus ‘pure’ + agere ‘to set in motion, drive; to do, perform’ < uhj < ag- < Tamil ukai