B(OH)3

from The Collaborative International Dictionary of English v.0.48

Boric \Bo"ric\, a. (Chem.)
   Of, pertaining to, or containing, boron.
   [1913 Webster]

   {Boric acid}, a white crystalline substance {B(OH)3}, easily
      obtained from its salts, and occurring in solution in the
      hot lagoons of Tuscany.
      [1913 Webster]