[1] : The Collaborative International Dictionary of English v.0.48

laburnum \labur"num\, n. l. 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.
   1913 webster

   note: scotch laburnum cytisus alpinus is similar, but has
         smooth leaves; purple laburnum is cytisus purpureus.
         1913 webster
see also:
cytisus laburnum cytisus alpinus cytisus purpureus 

Cytisus >> C Words
Cytisus, definition of term: Cytisus
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