Gain access to thousands of additional definitions and advanced search features—ad free! JOIN NOW
: a plant of the genus Cestrum
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:
Share cluster flower
Resources for cluster flower
clustered poppy mallow
Comments on cluster flower
What made you want to look up cluster flower? Please tell us where you read or heard it (including the quote, if possible).
having a pattern of small flowers
Get Word of the Day daily email!
Find the Cousins
Can you spell these 10 commonly misspelled words?
Test Your Knowledge - and learn some interesting things along the way.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
A word with surprisingly literal origins
Do you feel lucky?
'Justice' is our 2018 Word of the Year
Our Word of the Year justice, plus 10 more
How we chose 'justice'
And is one way more correct than the others?
How to use a word that (literally) drives some people nuts.
The awkward case of 'his or her'
Identify the word pairs with a common ancestor
A game of winding words.