gill bailer

noun

: a flat membranaceous expansion of the second maxilla in the crayfish and other decapod crustaceans by which water is scooped out of the gill cavity

called also gill scoop

Word History

Etymology

gill entry 3

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!