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buttercup

Pronunciation: /ˈbʌtəkʌp/
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Definition of buttercup

noun

  • a herbaceous plant with bright yellow cup-shaped flowers, which is common in grassland and as a garden weed. All kinds are poisonous and generally avoided by livestock.
    • Genus Ranunculus, family Ranunculaceae (the buttercup family). This large family also includes anemones, celandines, aconites, clematis, and hellebores, many of which have poisonous seeds

buttercup in other Oxford dictionaries

Definition of buttercup in the US English dictionary