sensitive plant

(noun) prostrate or semi-erect subshrub of tropical America, and Australia; heavily armed with recurved thorns and having sensitive soft grey-green leaflets that fold and droop at night or when touched or cooled. Synonyms: sensitive plant, touch-me-not, shame plant, live-and-die, humble plant, action plant, Mimosa pudica.

(noun) semi-climbing prickly evergreen shrub of tropical America having compound leaves sensitive to light and touch. Synonyms: sensitive plant, Mimosa sensitiva.