Bottle

British slang expression that from about the mid-20th century means courage, nerve or guts. It derives from 1920s rhyming slang, bottle and glass/arse or sometimes bottle and glass/class. Thus if a person was said to have no bottle it meant one of two things. That person either had no class and was thus singularly unimpressive or could not control their arse in threatening situations, the implications of which are obvious. Either way, having no bottle has now come to mean having no courage.