- a small opening in or between bones, esp one of the openings between the middle and inner ears
- a transparent marking or spot, as on the wings of moths
- a window or window-like opening in the outside wall of a building
WordReference Random House Unabridged Dictionary of American English © 2026
fe•nes•tra
(fi nes′trə),USA pronunciation n., pl. -trae (-trē).USA pronunciation
fe•nes′tral, adj.
- Anatomya small opening or perforation, as in a bone, esp. between the middle and inner ear.
- Insects[Entomol.]a transparent spot in an otherwise opaque surface, as in the wings of certain butterflies and moths.
- Architecturea windowlike opening.
- Neo-Latin, special use of Latin fenestra window, hole (in a wall)
- 1820–30
Collins Concise English Dictionary © HarperCollins Publishers::
fenestra /fɪˈnɛstrə/ n ( pl -trae /-triː/)
'fenestra' also found in these entries (note: many are not synonyms or translations):