black tin
Tin ore, when dressed, stamped and washed, ready for smeltingTin ore (cassiterite), when dressed, stamped and washed, ready for smelting. It is in the form of a black powder, like fine sand.
Meaning
1 senses(uncountable)Tin ore (cassiterite), when dressed, stamped and washed, ready for smelting. It is in the form of a black powder, like fine sand.
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable