Costermonger a secret language, a code which only other costermongers understood. In her book, "Shadows of the Workhouse", Jennifer Worth observed that "Costers... spoke to each other almost entirely in back slang; incomprensible to an outsider." Many costermongers also used "rhyming slang"; where any word can be substituted with another word that rhymes with it. Examples of rhyming slang include: "tin lids" or "dustpan lids" for "kids"; "jimmy grant" for "emigrant"; "apple and pears" for "stairs"; "rubbidy dub" for "pub" and "trouble and strife" for "wife". The selection of rhyming words often suggested a symbolic association. For example, a "sorrowful tale"
Rhyming slang term "Charing Cross" (a place in London), used to mean "horse" since the mid-19th century, does not work for a speaker without the lot–cloth split, common in London at that time but not nowadays. A similar example is "Joanna" meaning "piano", which is based on the pronunciation of "piano" as "pianna" . Unique formations also exist in other parts of the United Kingdom, such as in the East Midlands, where the local accent has formed "Derby Road", which rhymes with "cold". Outside England, rhyming slang is used in many English-speaking countries in the Commonwealth of Nations, with local variations. For