In British slang, "kisser" can have a couple of meanings.
According to the provided reference, "kisser" in British English can mean:
- A person who kisses, especially in a specified way (e.g., "a good kisser").
- Slang for mouth or face.
Therefore, depending on the context, "kisser" could refer to someone who kisses or, more commonly in slang, to someone's mouth or face.