A person with a big forehead they call it a fivehead because if you have a regular forehead u have a fourhead like the number four but if you have a fivehead you have a big forehead like the number five and the number five is after four so it makes it bigger

A person with a receeding hairline.

this term is used to describe individuals with unusually large and awkward forehead regions. See FUGLY This is more commonly used to describe women foreheads rather then mens, since men commonly recede at the hairline. Fiveheads tend to be more commonly found on Asian and African Americans. Basically one big forehead.

it's an epidemic that's sweeping the nation

noun - a very large head. specifically a very large forehead but my also be used to describe a large head in general.

Having a large forehead.

Paul's abnormaly large forehead.