Her slip 'peeked out' from beneath her skirt. [=a small part of her slip could be seen beneath her skirt]
We saw a 'sneak peek' [=a brief showing] of the movie that will be released next month.
They tried to 'sneak a peek' at the actors getting ready behind the curtain.
(..) a quick look inside? Actually, I'm on my way out. I'll come back, then. Uh, uh, okay, but just a peek. This is it... home sweet home. Wow! How old is this place? Uh... (..)2002 Sweet Home Alabama