'rain tree' definitions:

Definition of 'rain tree'

(from WordNet)
noun
Large ornamental tropical American tree with bipinnate leaves and globose clusters of flowers with crimson stamens and seed pods that are eaten by cattle [syn: rain tree, saman, monkeypod, monkey pod, zaman, zamang, Albizia saman]

Definition of 'rain tree'

From: GCIDE
  • Zamang \Za*mang"\, n. (Bot.) An immense leguminous tree (Pithecolobium Saman) of Venezuela. Its branches form a hemispherical mass, often one hundred and eighty feet across. The sweet pulpy pods are used commonly for feeding cattle. Also called rain tree. --J. Smith (Dict. Econ. Plants). [1913 Webster]