potash
pot.ash \'pa:t-.ash\ n [sing. of pot ashes] 1a: potassium carbonate esp. from wood ashes 1b: potassium hydroxide 2: potassium or a potassium compound esp. as used in agriculture or industr y
Webster's English Dictionarypot.ash \'pa:t-.ash\ n [sing. of pot ashes] 1a: potassium carbonate esp. from wood ashes 1b: potassium hydroxide 2: potassium or a potassium compound esp. as used in agriculture or industr y