kieselguhr (ˈkiːzəlˌɡʊə) ![]() | |
| —n | |
| an unconsolidated form of diatomite | |
| [C19: from German Kieselgur, from Kiesel flint, pebble + Gur loose earthy deposit] | |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| a chattering or flighty, light-headed person. |