fathead (plural fatheads)
- (derogatory) An idiot; a fool.
- Donny, you fathead! You forgot to put the milk in the fridge and now it's spoiled!
- (zoology) A cyprinoid fish of the Mississippi valley, Pimephales promelas, the black-headed minnow.
- (zoology) A labroid food fish of California; the redfish.
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.