buttercup

[ buht-er-kuhp ]
/ ˈbʌt ərˌkʌp /

noun

any of numerous plants of the genus Ranunculus, having glossy yellow flowers and deeply cut leaves.

Origin of buttercup

1505–15; butter + cup, from color and shape of flower
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for buttercup

buttercup

/ (ˈbʌtəˌkʌp) /

noun

any of various yellow-flowered ranunculaceous plants of the genus Ranunculus, such as R. acris (meadow buttercup), which is native to Europe but common throughout North AmericaSee also crowfoot, goldilocks (def. 2), spearwort, lesser celandine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012