Vamos otra vez - Spanish translation needed!

In this scene the cat is checking out a moving boxcar.

"There was a hole in the floor where some planks had been ripped out. I crept to the edge and peeked over."

This usage of the word "over" has me befuddled.

I guess I didn't make myself clear. What I'm asking for here is the Spanish quivalent of the above sentence.

Okay, let's try this again.
"There was a hole in the floor where some planks had been ripped out. I crept to the edge and peeked over."

My S/E dictionary doesn't cover this partcular usage of the word "over", so I need to know how to phrase the last part of the sentence - peeked over.

You mean like "Atornillarlo hacia arriba"? No, I always double check everything with my S/E dictionary, but sometimes it just doesn't cover what I'm loking for, which is why I come here.

So the best solution is to forget the "over" and go with "down". Thanks, everyone.
Kathie