Fanny (noun)

1. A vulgar slang term for the buttocks, typically used to refer to the female anatomy.
2. An impolite or offensive way to refer to a person's buttocks.

Origin:

From the british english word for the buttocks, originally used to refer to the female anatomy, although it is considered vulgar and impolite in many english-speaking countries.

Examples:

1. He was slapped on the fanny by the girl.
2. She made a comment about the size of her friend's fanny.
3. The word "fanny" is considered vulgar and impolite, it is not considered appropriate to use in polite conversation.
4. The word "fanny" is a British English word, it is not commonly used in American English.
5. The use of the word "fanny" is considered offensive and should be avoided.