Photo reblogged from Terminatexualology with 72 notes
FENESTRA
[noun]
1. Architecture: a window-like opening; a small window.
2. Entomology: a transparent spot in an otherwise opaque surface, as in the wings of certain butterflies and moths.
3. Anatomy, Zoology: a small opening or perforation, as in a bone, especially between the middle and inner ear.
Source: victoriousvocabulary