Fluoride makes the tooth enamel stronger, and your teeth are less likely to suffer from the intake of acidic foods and drinks. Using fluoride toothpaste helps to remineralize the areas affected by decay and protect them from the bacteria responsible for tartar formation (1).
Brass is a buttery yellow alloy of zinc and copper which has been manufactured for thousands of years in many parts of the world.
Princeton's WordNet (0.00 / 0 votes) Rate this definition: brass (noun). an alloy of copper and zinc. brass, brass instrument (noun). a wind instrument that consists of a brass tube (usually of variable length) that is blown by means of a cup-shaped or funnel-shaped mouthpiece.rass is an alloy of copper and zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties. By comparison, bronze is principally an alloy of copper and tin.