Home›Browse›B›broom shrubbroom shrubOur editors are putting together more complete content — check back in about 20 minutesbroom shrubbroom shrub — nounnoun1. a plant of the genus Cytisus or Genista, with yellow flowers1.nounDefinitiona plant of the genus Cytisus or Genista, with yellow flowersExampleThe broom shrub blooms in early spring.