A large round stone used for grinding grain.
A coarse-grained sandstone used for making such stones; millstone grit.
Often in a millstone round one's neck (referring to Matthew 18:6 in the Bible): a heavy responsibility that is difficult to bear.
A back tooth having a broad surface used for grinding one's food.
A unit of concentration equal to one mole per litre.
Of, relating to, or being a solution containing one mole of solute per litre of solution.
Of or relating to a complete body of matter as distinct from its molecular or atomic constituents.
Of or relating to the molar teeth, or to grinding.