'Crack-brained' definitions:

Definition of 'Crack-brained'

From: GCIDE
  • crackbrained \crackbrained\, Crack-brained \Crack"-brained`\(-br[=a]nd`), a. Having an impaired intellect; whimsical; extremely foolish; crazy; as, crackbrained notions. --Pope.
  • Syn: idiotic. [1913 Webster + WordNet 1.5 +PJC]