Clean bowled? A complete failure (7)
I believe the answer is:
washout
'a complete failure' is the definition.
(I've seen this before)
'clean bowled?' is the wordplay.
'clean' becomes 'wash' (washing is a kind of cleaning**).
'bowled?' becomes 'out' (cricket).
'wash'+'out'='WASHOUT'
(Other definitions for washout that I've seen before include "Flush" , "Cancelled test, for example" , "Disappointing failure" , "Failure - cancellation" , "A complete failure - rained off? (4-3)" .)