Commonly confused with "dickhead". Dichead can be used as an insult though technically it isn't meant as one. A dic head or urbanDictionaryhead is like a crack head. Someone who is hopelessly addicted to making definitions on urbandictionary.com
Examples include Bob, 4dimensional, Kung Fu Jesus, yobastank, etc. the list goes on and on. They make this place more interesting; If you're a dichead you know it.