/ Dictionary / Index R rattlepate: Meaning and Definition of Find definitions for: rat•tle•pate Pronunciation: (rat'l-pāt"), [key] — n. a rattlebrain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rattlehead rattler Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language