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rattlebrain

[rat-l-breyn]
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noun
  1. a giddy, empty-headed, talkative person.
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Origin of rattlebrain

First recorded in 1700–10; rattle1 + brain
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for rattlebrain

Historical Examples

  • That was a lot of rattlebrain talk anyway—we're so clevaire!

    Tom Slade with the Boys Over There

    Percy K. Fitzhugh