|—n , pl -trae|
|1.||biology a small opening in or between bones, esp one of the openings between the middle and inner ears|
|2.||zoology a transparent marking or spot, as on the wings of moths|
|3.||architect a window or window-like opening in the outside wall of a building|
|[C19: via New Latin from Latin: wall opening, window]|
fenestra fe·nes·tra (fə-něs'trə)
n. pl. fe·nes·trae (-trē')
A small anatomical opening, often closed by a membrane.
The opening in a bone made by surgical fenestration.
A specialized opening, as in a surgical instrument.