dross 
(drŏs, drôs)
(drŏs, drôs)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).
[Middle English dros, from Old English drōs, dregs.]
drossy adj.
- point man
- point mutation
- point of honor
- point of no return
- point of order
- point of sale
- point-of-sale
- point-of-service
- point of service
- point of view
- point-shaving
- point source
- point spread
- point system
- point woman
- pointy
- pointy-head
- pointy-headed
- poise
- poise
- poised
- poisha
- poison
- poison-dart frog
- poisoner