1 definition by Rossetta3123

A child with an unnaturally large brain that protudes from the child's head reaching up to 3 metres in all directions. A brainchild's brain has the capability of fatally crushing unsuspecting bystanders should they stray too close to the spectacle.
"That Emily is a brainchild"
"The brainchild's brain broke every bone in Terrance's body."
by Rossetta3123 September 10, 2006
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