peek · verb I /piːk/Full view
peek out/at/through, etc.
C2 to look at something for a short time, often when you do not want other people to see you
Dictionary examples:

She covered her face with her hands and peeked at them through her fingers.

Close your eyes and don't peek!

Learner example:

Just to make sure I raised myself on an elbow and peeked out my window; my thought showed to be right. (Certificate of Proficiency in English; C2; Swedish)

peek · noun C /piːk/
peek
C1 a quick look
Dictionary example:

She took a peek down the hall.

Learner example:

One can find an example by just taking a peek at a history of any royal dynasty, or even a wealthy merchant family. (International English Language Testing System; C1; Russian)

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