Rhyming slang is a form of slang that originated in the 19th century in England. It is a fascinating linguistic phenomenon, where a word or phrase is replaced with a rhyming phrase, often consisting of two or more words. Some synonyms for rhyming slang include Cockney rhyming slang, rhyming jargon, and cant. It is a unique way of communicating that has since spread to other English-speaking countries. The beauty of rhyming slang is that it can often be unrecognizable to non-speakers of the dialect, making it a secret language used by certain subcultures. It continues to evolve with new phrases being added and old ones being forgotten, but its charm remains unchanged.