Water retention, formally known as edema, is a symptom of a number of conditions including dehydration, constipation, hormonal changes, excess sodium in the diet, heart conditions and kidney problems.
dross. n. 1. Waste or impure matter: discarded the dross after recycling the wood pulp. 2. The scum that forms on the surface of molten metal as a result of oxidation. 3. Worthless, commonplace, or trivial matter: He was wide-awake and his mind worked clearly, purged of all dross (Vladimir Nabokov).
1 metallurgy : the scum or unwanted material that forms on the surface of molten metal. 2 : waste or foreign matter : impurity. 3 : something that is base (see 3base 7), trivial, or inferior There is quite a lot of dross on TV these days. a talent for turning literary dross into gold.