Bell ringers' bloomers? (8)
I believe the answer is:
clangers
'bloomers?' is the definition.
Although both the answer and definition are nouns, they are not in the same form of the noun.
'bell ringers'' is the wordplay.
'bell' becomes 'clanger' (I've seen this before).
'ringers'' becomes 's' (I can't justify this - if you can you should believe this answer much more).
'clanger'+'s'='CLANGERS'
Can you help me to learn more?
(Other definitions for clangers that I've seen before include "Embarrassing blunders" , "More than one mistake" , "Drop them and make serious mistakes" .)