cotton tree

noun

1

: any of various trees belonging to the genera Bombax and Ceiba

especially : ceiba sense 2a

2

: wayfaring tree sense 1

3

: either of two cottonwoods (Populus balsamifera and P. heterophylla)

4

: black poplar sense 1

5

Australia : majagua sense a

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!