Remove dirt from (7)
'remove dirt from' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for cleanse that I've seen before include "purify from sin" , "Free of sin" , "Bathe" , "clear of muck" , "Make free from dirt" .)
(Other definitions for clean that I've seen before include "attentive to personal hygiene" , "Spick and span" , "Unspoiled" , "Not soiled, free from dirt" , "Absolute - pure" .)