la·bur·num /ləˈbɝnəm/
  金鏈花
  La·bur·num n.  Bot. A small leguminous tree (Cytisus Laburnum), native of the Alps. The plant is reputed to be poisonous, esp. the bark and seeds. It has handsome racemes of yellow blossoms.
  Note: ☞ Scotch laburnum (Cytisus alpinus) is similar, but has smooth leaves; purple laburnum is Cytisus purpureus.
  ◄ ►
  Laburnum
       n : flowering shrubs or trees having bright yellow flowers; all
           parts of the plant are poisonous [syn: genus Laburnum]