a person with a head shaped oddly like a melon

verb - to stick your head in an australian's girl vagina

noun - someone who has tits the size of melons who are good at giving head

There is a rumor that there was a man living in San Francisco who died from giving melonhead to a korean cleric.

Someone with a head proportionately larger than their body, usually quite noticable.

somebody who listens to and is a huge fan of the awesome band blind melon!!!!

Someone who's head is in the shape of a melon.
Is also a way of bullying.

A compliment, as the person is regarded as a melon. Melons are better than people, so if you are called a melonhead it is a great honour.

Of or relating to an unusually large cranium that is in the general shape of the melon family of fruit.