Bottoms of wee babies are turned over for wipe (5)
I believe the answer is:
erase
'wipe' is the definition.
'bottoms of wee babies are turned over' is the wordplay.
'bottoms of' suggests the final letters.
'turned over' is a reversal indicator.
The last letters of 'wee babies' are 'es'.
'es'+'are'='esare'
'esare' backwards is 'ERASE'.
'for' acts as a link.
(Other definitions for erase that I've seen before include "Do away with" , "To remove all trace" , "Scratch" , "Put out of mind" , "Blot out" .)