Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun fenestra

1 sense of fenestra

Sense 1
fenestra -- (a small opening covered with membrane (especially one in the bone between the middle and inner ear))
       => orifice, opening, porta -- (an aperture or hole that opens into a bodily cavity; "the orifice into the aorta from the lower left chamber of the heart")