WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
emotionally charged terms used to refer to extreme radicals or revolutionaries
adjective.
obstreperous
Word Usage
"When you hear their music after all this – there's a track called Darling Buds of May and another called New Year's Day that are the musical equivalent of the word "bolshy" – there's a chance you may feel distinctly underwhelmed."