Any of several leguminous plants of the genus Chamaecrista (family Fabaceae), native to the Americas and having leaflets that fold together when touched.
Origin
Early 19th century; earliest use found in Frederick Pursh (1774–1820).
Definition of sensitive pea in US English:
sensitive pea
noun
Any of several leguminous plants of the genus Chamaecrista (family Fabaceae), native to the Americas and having leaflets that fold together when touched.
Origin
Early 19th century; earliest use found in Frederick Pursh (1774–1820).