Definition of "flat-headed" [flat•-head•ed]

• Having a head with a flattened top. (adjective)

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)

• "And with it comes the image, endlessly reproduced in everything from horror movies to breakfast cereals, of a green-skinned, flat-headed, groaning, lumbering giant with bolts in his neck — a far cry from Mary Shelley's articulate Creature."
• "In the Steven Spielberg movie, the flat-headed alien uses it to build his interplanetary communicator."
• "The English were amazed at the giant, flat-headed statues with their inscrutable sphinx-like faces and cylindrical ten-ton topknots of red stone balancing on their brows."