(1):
(n.) Impure soda obtained from the ashes of any seashore plant, or kelp.
(2):
(n.) The alkali produced from the plant, being an impure carbonate of soda, used for making soap, glass, etc., and for bleaching purposes.
(3):
(n.) A name given to several species of Salsola from which soda is made, by burning the barilla in heaps and lixiviating the ashes.