/ Dictionary / Index B bulbous buttercup: Meaning and Definition of Find definitions for: bul'bous but'tercup Pronunciation: [key] a European buttercup, Ranunculus bulbosus, having yellow flowers in irregular branching clusters: a common weed in North America. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bulbous bulbul Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language