Plural of buttercup; small yellow wildflowers with shiny petals, commonly found in meadows and grasslands.
From 'butter' and 'cup,' named for the flower's bright yellow color and cup-shaped blooms. The glossy petals reflect light like butter.
Buttercups have a special layer of cells beneath their petals that acts like a mirror, bouncing light around to make them glow—which is why holding one under your chin makes a yellow reflection on your skin!
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