Laburnum

noun

1. flowering shrubs or trees having bright yellow flowers; all parts of the plant are poisonous

   noun.plant

   Synonyms genus laburnum

   Source: WordNet 3.0

2. A small leguminous tree (<i>Cytisus Laburnum</i>), native of the Alps. The plant is reputed to be poisonous, esp. the bark and seeds. It has handsome racemes of yellow blossoms.

   noun

   Source: webster1913