Dross
Pronunciation : Dross
Part of Speech : n.
Etymology : [AS. dros, fr. dre?san to fall. See Dreary.]
Definition : 1. The scum or refuse matter which is thrown off, or falls from, metals in smelting the ore, or in the process of melting; recrement.
2. Rust of metals. [R.] Addison.
3. Waste matter; any worthless matter separated from the better part; leavings; dregs; refuse. All world's glory is but dross unclean. Spenser. At the devil's booth are all things sold, Each ounce of dross coats its ounce of gold. Lowell.
Source : Webster's Unabridged Dictionary, 1913