rattleweed

noun

1

: any of various leguminous plants especially of the genera Astragalus, Phaca, and Oxytropis

2

: bladder campion sense 1

3

: bugbane

4

: rattlebox

Word History

Etymology

rattle entry 2 + weed

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!