The Collaborative International Dictionary
Soapberry tree
Soapberry tree \Soap"ber`ry tree`\ (Bot.) Any tree of the genus Sapindus, esp. Sapindus saponaria, the fleshy part of whose fruit is used instead of soap in washing linen; -- also called soap tree.
WordNet
soapberry tree
n. a tree of the genus Sapindus whose fruit is rich in saponin [syn: soapberry]