saw fern

noun

: a widely distributed fern (Blechnum serrulatum) with erect stiff fronds that often grows in dense colonies in tropical marshes and is especially common in Florida and the West Indies

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!