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1. Any of several bulbous plants of the genus Chlorogalum of western North America, having small white or purple flowers. The bulbs of several species, especially C. pomeridianum, produce a soapy lather when crushed.
2. Any of various other plants having parts used as soap.
1. a California plant, Chlorogalum pomeridianum, of the lily family, the bulb of which was used by the Indians as a soap.
2. any of various other plants having parts that can be used as a soap.