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.