| a chattering or flighty, light-headed person. |
| a fool or simpleton; ninny. |
fenestration fen·es·tra·tion (fěn'ĭ-strā'shən)
n.
An opening in the surface of a structure, as in a membrane.
The surgical creation of such an opening.
The surgical creation of an artificial opening in the bony part of the inner ear to improve or restore hearing.