MOONFLAW IN THE BRAIN, verb. phr. (old).—An idiosyncrasy; a craze. See BEE IN THE BONNET.

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  1659.  R. BROME, The Queen and Concubine. iv. 7.

          Hor.  I fear she has a MOONFLAW in her brains;
She chides and fights that none can look upon her.

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