Meaning of brainwork

brain•work

Pronunciation: (brān'wûrk"), [key]
— n.
  1. work or effort consisting principally or largely of mental activity, thought, imagination, etc., as opposed to physical or manual work.
  2. the effort of thought, reasoning, planning, or the like; ordered or directed thinking: Solving problems is a form of brainwork.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.