soap tree

noun — 2 senses

soap tree

noun

1

Any of various trees whose leaves or fruit can be used as a substitute for soap.

2

Australia A tree, Alphitonia excelsa, whose leaves are used as soap.

Kerry wandered off for a leak. She squatted behind a soap tree […].2018, Melissa Lucashenko, Too Much Lip, University of Queensland Press, published 2023, page 314:

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