Bottle never broken (5)
I believe the answer is:
nerve
'bottle' is the definition.
(both can mean courage)
'never broken' is the wordplay.
'broken' indicates an anagram.
'never' with letters rearranged gives 'NERVE'.
(Other definitions for nerve that I've seen before include "Sensitive fibre in the body" , "Sauce" , "Mettle, daring" , "Cool courage" , "Cceek or courage" .)