Definitions

1. verb

to cut or make small windows or openings in something, especially a rock or a fossil

“The geologist decided to fenestrate the rock to study its internal structure.”

2. verb

to provide or be provided with windows

“The architect designed the house to fenestrate the south side for natural light.”

3. noun

a small window or opening, especially in a rock or a fossil

“The scientist studied the fenestration of the dinosaur’s fossil to understand its anatomy.”