| a chattering or flighty, light-headed person. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
radiance ra·di·ance (rā'dē-əns) or ra·di·an·cy (-ən-sē)
n.
The quality or state of being radiant.
The radiant energy emitted per unit time in a specified direction by a unit area of an emitting surface.