limestone

noun

lime·​stone ˈlīm-ˌstōn 

: a rock that is formed chiefly by accumulation of organic remains (such as shells or coral), consists mainly of calcium carbonate, is extensively used in building, and yields lime when burned

Examples of limestone in a Sentence

Recent Examples on the Web

Enchanting limestone cliffs frame the lake on two sides, and there are wetlands upstream from the lake, but historic buildings — including a lodge — are in disrepair. —John Meyer, The Denver Post, 8 Feb. 2025

In the karst, rocky limestone landscape of Thailand, a group of green creatures hides in the shadows. —Irene Wright, Miami Herald, 28 Jan. 2025

Waves crashed against the 100-foot-high limestone cliff, and deep-blue water extended to the horizon. —Jacqueline Kehoe, Travel + Leisure, 23 Jan. 2025

Which leaves us wondering, looking over the limestone cliffs to the turquoise waters beyond, why would anyone ever want to automate this job? —Mark Gauert, Sun Sentinel, 20 Jan. 2025

Word History

First Known Use

14th century, in the meaning defined above

Phrases Containing limestone

• nummulitic limestone

Kids Definition

limestone

noun

lime·​stone ˈlīm-ˌstōn 

: a rock that is formed chiefly from animal remains (as shells or coral), consists mainly of calcium carbonate, is used in building, and gives lime when burned