'brainwave' definitions:

Definition of 'brainwave'

From: WordNet
noun
(neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph [syn: brainwave, brain wave, cortical potential]
noun
The clear (and often sudden) understanding of a complex situation [syn: insight, brainstorm, brainwave]

Definition of 'brainwave'

From: GCIDE
  • brainwave \brain"wave`\ (br[=a]n"w[=a]v), n.
  • 1. rapid fluctuations of voltage between parts of the brain.
  • Syn: brain wave, cortical potential. [WordNet 1.5]
  • 2. the clear (and often sudden) understanding of a complex situation.
  • Syn: insight, brainstorm. [WordNet 1.5]