Definition of: flour

(flour) noun
1. The ground and bolted substance of wheat.
2. The finely ground particles of any specified cereal: rye flour.
3. Any finely powdered substance.
4. Loose, finely crystallized saltpeter, used in making gunpowder.
—v.t.
1. To make into flour; pulverize, as wheat.
2. Metall. To break up into minute particles: to flour mercury in the amalgamating process.
3. To sprinkle or cover with flour. [Var. of FLOWER]
—flour′y adjective