| bugbane | (noun) a plant of the genus Cimicifuga having flowers in long racemes or panicles reported to be distasteful to insects | - |
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| (noun) North American plant having large leaves and yellowish green flowers growing in racemes; yields a toxic alkaloid used medicinally | Synonyms: American hellebore, Indian poke, Veratrum viride, white hellebore |
| bugbear | (noun) an object of dread or apprehension | Synonyms: hobgoblin |
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| (noun) an imaginary monster used to frighten children | Synonyms: bogeyman, booger, boogeyman, bugaboo |