Meaning of the word slag in English

What does slag mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

slag

US /slæɡ/
UK /slæɡ/
"slag" picture

Noun

stony waste matter separated from metals during the smelting or refining of ore

Example:
The iron ore is melted and the slag is removed.
The road was built using a base of crushed slag.

Verb

to produce slag during smelting; (British slang) to criticize someone rudely or insultingly

Example:
The furnace began to slag properly after reaching the right temperature.
He's always slagging off his teammates to the press.