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
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“Funnel tube.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/funnel%20tube. Accessed 25 Nov. 2024.
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