In rap slang, "k" is a frequently used shorthand form, which stands for "banknote" or "money". In rap music, topics such as money and wealth are often involved, so "K" has also become one of the words with high frequency of use. Sometimes, rappers also use "K" to refer to other forms of wealth, such as jewelry, cars, real estate and so on. No matter how it is used, the similar expressions of "K" are MyMoney, Cash, Dosh, Banknote and so on.

In addition to the meaning of "money", "k" is also often used to refer to some people in rap slang. This usage is basically used on Rosa. For example, "ks" stands for "myself" or "himself". In rap music, self-expression and self-awareness play a very important role. By using different slang, singers can express their unique personality, attitude and role image.

Another way to use "k" is to propose marriage. This usage may be less common, but it has appeared in some songs. For example, there may be words like "I just want you to know that I only have you in my heart and you are my K" in the lyrics. Therefore, for those who are familiar with rap music, they may understand the meaning of the letter "K" in a completely different way.