Definitions
1.NounAny of several not closely related saltmarsh plants that were once burnt to obtain soda ash, such as Soda inermis.
2.NounThe alkali produced from the plant, an impure carbonate of soda, used for making soap, glass, etc., and for bleaching.
3.NounImpure soda obtained from the ashes of any seashore plant, or kelp.