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.
(..) Oh, Veronique. Nos no! no, no, "C. What, you don't like her new look? What about my new look, baby? Want a peek? I've always wanted her eyes. And now I have them. - Give him the money shot, sis. - But of course. Watch this. (..)2009 The Black Waters of Echo's Pond
(..) Oh, my God, what happened here? Where is everybody? You know what? Let's get the boys. Let's go find out. - Come on, give us a peek. - No. - Come on. - No. - Show us what we've been missing. - No. (..)2009 The Black Waters of Echo's Pond