Arranged debit for basin (5)
I believe the answer is:
bidet
'for basin' is the definition.
(bidet is a kind of basin)
'arranged debit' is the wordplay.
'arranged' indicates anagramming the letters.
'debit' is an anagram of 'BIDET'.
(Other definitions for bidet that I've seen before include "Bathroom appliance" , "bathroom accessory" , "Bathroom basin" , "Bathroom fixture" , "Where to wash" .)