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rattle-bush

American

[rat-l-boosh] / ˈræt lˌbʊʃ /

noun

blue false indigo.

Etymology

Origin of rattle-bush

First recorded in 1740–50

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.