soapberry tree Meaning, Definition & Usage

  1. noun a tree of the genus Sapindus whose fruit is rich in saponin
    soapberry.

WordNet

Soap"ber`ry tree`
Definitions
  1. (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.

Webster 1913