cockneyism
/ˈkɑkniˌɪzəm/
noun
- A word, phrase, or expression characteristic of Cockney speech or culture.
- Using 'apples and pears' for stairs is a classic cockneyism.
- She dropped a cockneyism into the conversation, surprising everyone with her London slang.
- The book explained many cockneyisms that tourists often misunderstand.