fenestra Fenestellidae • fenestral · · · Info · Definitions · Characters · · fenestra · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a small opening covered with membrane (especially one in the bone between the middle and inner ear). · · Noun Definition 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074