The word "caff" is an informal British term that means a small café or a casual place where you can get food and drinks, especially in a relaxed atmosphere. It is often used in everyday conversation, particularly in the UK.
In more advanced contexts, "caff" can refer to specific types of cafés that serve traditional British food, sometimes called a "greasy spoon," which is a slang term for a café that serves inexpensive, hearty meals.
There aren't specific idioms or phrasal verbs that directly use "caff," but you might hear phrases like: - "Grab a bite at the caff" (meaning to go eat something quickly at a café). - "Meet up at the caff" (meaning to arrange a meeting at a casual café).
In summary, "caff" is an informal British word for a casual café where people can enjoy food and drinks.