laburnum

noun
la·​bur·​num | \lə-ˈbər-nəm \

Definition of laburnum 

: any of a small genus (Laburnum, especially L. anagyroides) of poisonous leguminous shrubs and trees of Eurasia with pendulous racemes of bright yellow flowers

First Known Use of laburnum

1567, in the meaning defined above

History and Etymology for laburnum

New Latin, from Latin

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The first known use of laburnum was in 1567

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