Opposite was a vertical slit that went from the top of the blank wall to the bottom.
For a start, he had no mouth, just three vertical slits.
He just looked at me with the vertical slits that were his eyes.
A high vertical slit on the outer wall, too slim to call a window, offered little light and even less hope.
No other type of creature has ever had the vertical slit in its light sensors.
The first wall has a single vertical slit in it.
The single eye was still covered by the vertical slit of a closed lid.
Large eyes with vertical slits of green pupils were fixed on her.
A vertical slit in the middle of the 'O' makes it look like a cat's eye.
You will need a black card with a vertical slit.