'Hairbrained' definitions:

Definition of 'Hairbrained'

From: GCIDE
  • Hairbrained \Hair"brained`\ (h[^a]r"br[=a]nd`), a. See Harebrained. Hairbreadth

Definition of 'hairbrained'

From: GCIDE
  • Harebrained \Hare"brained`\ (h[^a]r"br[=a]nd`), a. Wild; giddy; volatile; heedless. "A mad hare-brained fellow." --North (Plutarch). [Written also hairbrained.] [1913 Webster]