dyer's-broom
     n : small Eurasian shrub having clusters of yellow flowers that
         yield a dye; common as weed in England and United States;
         sometimes grown as an ornamental [syn: {woodwaxen}, {dyer's
         greenweed}, {dyeweed}, {greenweed}, {whin}, {woadwaxen},
         {Genista tinctoria}]
Source: WordNet® 2.0