ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ noun
1. : an alkaline water solution of calcium hydroxide that absorbs carbon dioxide from the air forming a film of calcium carbonate on the surface of the liquid and that is used in medicine as an antacid and ingredient of external washes — compare milk of lime
2. : natural water containing considerable amounts of calcium carbonate or calcium sulfate in solution