noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The bark of the evergreen tree, Quillaja saponaria, which when pulverised forms a lather with water. uncountable, usually
2. 2
   The tree Quillaja saponaria. uncountable, usually

Synonyms

All synonyms

soap bark tree

Etymology

From soap + bark.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.