Also cullay. [Chilian (Araucanian) quillai, quillay, f. quillcan to wash.] The soap-bark tree of Chili (Quillaia saponaria): see next. Also attrib., as quillai-bark, -tree.
1866. Treas. Bot., 952/2. Q. Saponaria, the Quillai or Cullay of the Chilians, is a tree from fifty to sixty feet high.
