'Quillaia bark' definitions:

Definition of 'Quillaia bark'

From: GCIDE
  • Quillaia bark \Quil*la"ia bark`\ (Bot.) The bark of a rosaceous tree (Quillaja Saponaria), native of Chile. The bark is finely laminated, and very heavy with alkaline substances, and is used commonly by the Chileans instead of soap. Also called soap bark. [1913 Webster]