fenestra Meaning, Definition & Usage

  1. noun a small opening covered with membrane (especially one in the bone between the middle and inner ear)

WordNet

Fe*nes"tra noun
Etymology
L., a window.
Wordforms
plural Fenestræ
Definitions
  1. (Anat.) A small opening; esp., one of the apertures, closed by membranes, between the tympanum and internal ear.

Webster 1913