funnel tube

noun

: a long usually glass tube that has a conical or bulging thistle-shaped top and sometimes a loop with or without bulbs serving as a safety trap and that is used especially in the chemical laboratory for pouring liquid into an apparatus

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!