peep in

peep in(to something)

To peer, glimpse, or glance in(to something) quickly, shyly, or inconspicuously. The secretary peeped in and disappeared just as quickly when she realized people were in the room. He peeped into the box and saw that his wife had gotten him a new watch for Christmas.See also: peep

peep in(to something)

to get a quick look into something, as through a hole in the wall or something similar. I peeped into the oven to see what was cooking for dinner. She opened the oven door and peeped in.See also: peep