n :  a white crystalline compound that consists of a hydrated sodium borate Na₂B₄O₇·10H₂O, that occurs as a mineral or is prepared from other minerals, and that is used esp. as a flux, cleansing agent, and water softener and as a preservative .
 
    
 
Similar sounding terms:  braxy 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.