| Noun | 1. | genus Simarouba - type genus of Simaroubaceae; tropical American trees and shrubs having a pale soft wood and bitter bark rosid dicot genus - a genus of dicotyledonous plants family Simaroubaceae, quassia family, Simaroubaceae - chiefly tropical trees and shrubs with bitter bark having dry usually one-seeded winged fruit marupa, Simarouba amara - tree of the Amazon valley yielding a light brittle timber locally regarded as resistant to insect attack paradise tree, Simarouba glauca, bitterwood - medium to large tree of tropical North and South America having odd-pinnate leaves and long panicles of small pale yellow flowers followed by scarlet fruits |