|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|a chattering or flighty, light-headed person.|
calcareous cal·car·e·ous (kāl-kâr'ē-əs)
Composed of, containing, or characteristic of calcium carbonate, calcium, or limestone; chalky.
|calcareous (kāl-kâr'ē-əs) Pronunciation Key
Composed of or containing calcium or calcium carbonate. Calcareous rocks contain as much as 50 percent calcium carbonate.