Neptune's cup

noun

variants or less commonly Neptune's goblet
: either of two very large cup-shaped sponges (Poterion neptuni and P. amphitritae) sometimes four feet high

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Cite this Entry

“Neptune's cup.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Neptune%27s%20cup. Accessed 28 Mar. 2024.

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