rattlebrain

[rat-l-breyn]

See more synonyms for rattlebrain on Thesaurus.com

noun

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