Crossword Genius

Mental block buster (4)

Ross

I believe the answer is:

idea

'mental block buster' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for idea that I've seen before include "Brainwave" , "Plato's Form is" , "Something imagined in the mind" , "Suggestion" , "Intention" .)

I've seen this clue in the L.A. Times Daily and the Newsday.
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