| Noun | 1. | Mimosa pudica - prostrate or semi-erect subshrub of tropical America, and Australia; heavily armed with recurved thorns and having sensitive soft gray-green leaflets that fold and droop at night or when touched or cooledgenus Mimosa - genus of spiny woody shrubs or trees; named for their apparent imitation of animal sensitivity to light and heat and movement mimosa - any of various tropical shrubs or trees of the genus Mimosa having usually yellow flowers and compound leaves | |