Crossword clues for the word: BRAINWAVE The word BRAINWAVE has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for BRAINWAVE Showing 1 to 5 of 5 results Clue(s) EEG detection Idea you jot when thinking of a white horse? Inspiration: Colloq. Sudden bright idea, informally Sudden clever idea