peek

a secret look at something before it is officially available

a fast look

a small, brief look

to take a quick look

to take a look secretly

to take a quick look

to succeed in getting a quick look

to be brave enough to take a look

to risk taking a look

a brief look towards something

a look via an opening or gap

a brief look inside something

a look at what is happening in the background or secretly

to appear partially from behind something

to look carefully and with hesitation

to look briefly towards something

to look through an opening; can also mean to become visible through something (e.g., sun through clouds)

to look briefly inside a space or container

to look around an obstacle