Sentence:  If the little history of Madison could not have been written without meddling with the caps and petticoats of its first ladies, and also selecting from the verdant brain of an old gray-headed idiot, trash concocted and <WSD>cockneyized</WSD> in London, then it had better ever remained a blank. 
Meaning of the word marked with <WSD> tags:  To make vulgar and tasteless.