Answer:

dross

Answer	Crossword Clue
DROSS	Smeltery refuse
DROSS	Scoria
DROSS	Unwanted parts

DROSS	Rubbish
DROSS	Impurity
DROSS	Waste matter
DROSS	Unwanted extra
DROSS	Slag
DROSS	Worthless byproducts
DROSS	Smeltery waste
DROSS	Trivial stuff

DROSS	Refuse
DROSS	Worthless stuff
DROSS	Metallic waste
DROSS	Metallic refuse
DROSS	Inferior material
DROSS	Metalworker's waste
DROSS	Smelting waste
DROSS	Inferior leftovers

DROSS	Waste material
DROSS	Worthless leftovers
DROSS	Metal waste
DROSS	Worthless material
DROSS	Smelter's leftovers
DROSS	Unwanted stuff
DROSS	Metallic scum
DROSS	Metal residue

DROSS	Impurities
DROSS	Smelter's trash
DROSS	Smelting residue
DROSS	Smelting refuse
DROSS	It's worthless
DROSS	Refuse.
DROSS	Scoria.
DROSS	Scum.

DROSS	Slag.
DROSS	Waste.
DROSS	Waste matter.
DROSS	Rubbish.
DROSS	Metallic waste.

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.