n. (Min.) A mineral of a white or gray color occurring massive and in isometric crystals; in composition it is a magnesium borate with magnesium chloride. [ 1913 Webster ]
n. [ From Boric. ] (Chem.) A salt formed by the combination of boric acid with a base or positive radical. [ 1913 Webster ]
adj. mixed or impregnated with borax. [ WordNet 1.5 ]