The most common and most likely answer to this crossword clue is the 4 letter word SLAG which also is the latest solution we found used in USA Today in 2013.
Furnace waste crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| SLAG | 100 % | 4 | 
Words with a meaning similar to the clue: Furnace waste
These words may or may not be a possible solution to this crosswords clue.- slag
 - incinerator
 - ashbin
 - ash
 - burn
 - cinder
 - dross
 - flue
 - salamander
 - draft
 - gas
 - soot
 
Crossword Answer definitions
SLAG noun- Waste material from a coal mine
 - Scum that forms on the surface of molten metal
 - Impurities formed and separated out when a metal is smelted from ore; vitrified cinders
 - Hard aggregate remaining as a residue from blast furnaces, sometimes used as a surfacing material
 - Scoria associated with a volcano
 - A coward
 - (chiefly Cockney) a contemptible person, a scumbag
 - A prostitute
 - A woman (sometimes a man) who has loose morals relating to sex; a slut
 
- To produce slag
 - To become slag; to agglomerate when heated below the fusion point
 - To reduce to slag
 - (sometimes with "off") to talk badly about; to malign or denigrate (someone)
 - To spit
 
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution