bush honeysuckle n 1: a honeysuckle shrub of southern Russia to central Asia [syn: {Tartarian honeysuckle}, {Lonicera tatarica}] 2: bush honeysuckle of southeastern United States having large crowded clusters of sulfur-yellow flowers [syn: {Diervilla sessilifolia}] 3: spreading bush of northeastern United States having small clusters of fragrant green-yellow flowers [syn: {Diervilla lonicera}]