tailings
Tailings (noun) means the waste material left over after valuable minerals have been extracted from ore during mining. Example: “The old mine left behind huge piles of toxic tailings.”
How to use tailings
Learner’s notesIn plain EnglishThe leftover waste material from mining, milling, or distilling — what's left once the valuable part has been removed.
Fill the gap
Can you complete this real example?
The old mine left behind huge piles of toxic _____.