noun
limestone
LYM-stohn
noun
1
A common sedimentary rock made mostly of calcium carbonate, formed from ancient marine deposits.
"The cliffs are made of white limestone."
How to Use Limestone
Learner’s notesIn plain EnglishA widespread rock type used in construction and formed from ancient sea sediment.
Common pairings
limestone cliffs
limestone quarry
Word Forms
limestones plural
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The cliffs are made of white _____.
Etymology
From lime plus stone.