ˈ ̷ ̷ˌ ̷ ̷ noun
1. : a rock that is chiefly formed by accumulation of organic remains (as shells or coral), that consists mainly of calcium carbonate though sometimes also containing magnesium carbonate, and that is extensively used in building, agriculture, and metallurgy and yields lime when burned — compare calcite , chalk , dolomite , oolite
2. : hair brown