They're rough in the bath, spreading flash floods centrally (7)
I believe the answer is:
loofahs
'they're rough in the bath' is the definition.
The definition suggests an adverb but the answer is not.
'spreading flash floods centrally' is the wordplay.
'spreading' is an anagram indicator.
'centrally' says to take the centre.
The middle letters of 'floods' are 'oo'.
'flash'+'oo'='flashoo'
'flashoo' anagrammed gives 'LOOFAHS'.
Can you help me to learn more?
(Other definitions for loofahs that I've seen before include "Back scratchers" , "Dried part of a plant used as washing sponges" , "Has fool got the back brushes?" , "Bath sponges" .)